ibps rrb office assistant prelims mock test 1 - ixambee

IBPS RRB Office Assistant Prelims Mock Test 1

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The answers along with explanations are given at the end of the question paper

Section: Reasoning

Directions (1-5):

In each question below are given three statements followed by three conclusions numbered I, II and III. You have to take the three given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.

Question No. 1 Statements: All pearls are diamonds.

All diamonds are gold

All gold are silvers.

Conclusions: I. All pearls are silvers.

II. No diamond is a gold.

III. Some silvers are diamonds.

Options :

1. Only I follow

2. Only II and III follow

3. Only I and III follow

4. All I, II and III follow

5. None of these

Question No. 2 Statements: Some paintings are colours.

All colours are rainbows.

No rainbow is a shower.

Conclusions: I. Some colour are shower.

II. Some showers are not colours.

III. Some paintings are not rainbows.

Options :

1. Only I follow

2. Only II follows

3. Only III follow

4. All I, II and III follow

5. None of these



Question No. 3 Statements: Some ships are boats.

Some boats are sails.

No sail is a sailor.

Conclusions: I. No boat is a sailor.

II. Some sails are ships.

III. Some boats are not sailors.

Options :

1. Only I follow

2. Only II follow


4. Only III follows

5. None of these

Question No. 4 Statements: Some bags are trolleys.

All trolleys are luggage.

Some luggage is a warehouse.

Conclusions: I. Some trolleys are warehouses

II. Some luggage are trolleys.

III. No bag is a warehouses..

Options :

1. Only I follow

2. Only II follow


4. None follow

5. None of these

Question No. 5 Statements: Some pants are trousers.

No trouser is a shirt.

All shirts are ties.

Conclusions: I. Some shirts are not pants.

II. Some shirts are trousers.

III. Some ties are not trousers.

Options :

1. Only I and III follows

2. Only III follows

3. Only I and II follows

4. Only II follows

5. None of these



Directions (6-10): In the following questions, the symbols %, $, #, @ and & are used with the following meaning as illustrated below:

‘A%B’ means ‘A is not smaller than B’.

‘A$B’ means ‘A is not greater than B’.

‘A#B’ means ‘A is neither greater than nor equal to B’.

‘A@B’ means ‘A is neither smaller than nor equal to B’.

‘A&B’ means ‘ A is neither greater than nor smaller than B’.

Now in each of the following questions assuming the given statements to be true, for conclusions I and II given below them is/are definitely true? Give answer

Question No. 6 Statements: V # W, W % T, T $ H

Conclusions: I. V @ T II. H & W

Options :

1. if only Conclusion I is true.

2. if only Conclusion II is true.

3. if either Conclusion I or II is true.

4. If neither Conclusion I nor II is true.

5. If both Conclusions I and II are true.

Question No. 7 Statements: H @ M, M % E, E # C

Conclusions : I.C % M II. H @ E

Options :

1. if only Conclusion I is true. 2. if only Conclusion II is true.




Question No. 8 Statements: A % B, B & D, D @ E

Conclusions: I. D $ A II. A @ E

Options :








Question No. 9 Statements: X % Y, Y @ Z, Z # A

Conclusions: I. A # X II. X $ A

Options :

1. if only Conclusion I is true. 2. if only Conclusion II is true.




Question No. 10 Statements: P $ Q, Q @ R, R % S

Conclusions: I. S # Q II. S & Q

Options :






Directions(11-15): Study the following information carefully and answer the given questions.

Eight friends A, B, G, H, J, K, P and Q are seated in a straight line, but not necessarily in the same order. Some of them are facing North while some are facing South. Only three people sit to the left of K. G sits second to the right of K. H sits third to the left of Q. Q is not an immediate neighbor of K. Q does not sit at any of the extreme ends of the line. Both the immediate neighbors of Q face south.

B sits second to the left of P. As many people sit between K and B as between K and J. Immediate neighbors of H face opposite directions(i.e., if one person faces north then the other person faces south and vice-versa). A faces north. J and H face direction opposite to A (i.e If A faces north then both J and H face south and vice-versa).

Question No. 11 How many people sit to the right of Q? Options :

1. Three

2. more than four

3. four

4. one

5. two



Question No. 12 Who amongst the following represent the persons sitting at extreme ends of the line? Options :

1. A,P

2. B,A

3. J,B

4. H,A

5. J,Q

Question No. 13 Who amongst the following sits second to the left of J? Options :

1. H

2. K

3. A

4. G

5. None of these

Question No. 14 Who amongst the following faces North? Options :

1. T

2. H

3. U

4. I

5. None of these

Question No. 15 Which of the following is true, based on the given arrangement? Options :

1. J sits at one of the extreme ends of the line.

2. B faces North.

3. Q and G face the same directions

4. Only two people face North.

5. None of these



Directions(16-17): Study the following information carefully and answer the given Questions based on it.

A family consists of six members A, B, C, D, E and F. B is son of C. E is brother of C. D is daughter of A. C is not the mother of B. A and C are married couple. F is brother B.

Question No. 16 How many male members are there in the family?

Options :

1. Three

2. Five

3. Two

4. Four

5. None of these Question No. 17 How is E related to F?

Options :

1. Father

2. Brother

3. Uncle

4. Cousin

5. None of these Question No. 18 If each vowel of the word WITHOUT is changed to the previous letter of the English alphabets and each consonant is changed to the next letter of the English alphabet, and then the alphabets thus formed are arranged in alphabetical order from left to right, which of the following will be exactly in the middle? Options :

1. T

2. H

3. U

4. I

5. None of these



Directions (19-20):

Read the situations given below to answer the questions

Nine houses A, B, C, D, E, F, G, H, I and J are situated such that:

I. C is 2m west of B. II. A is 4m south of B.

III. H is 2m north of A. IV. G is 6m east of H. V. D is 2m west of G. VI. F is 4m south of G. VII. I is situated in the middle of B and C. VIII. E is situated in the middle of H and D.

Question No. 19 What is the distance between H and D? Options :

1. 2M

2. 4m

3. 6m

4. 1m

5. None of these

Question No. 20 What is the direction of B with respect to H? Options :

1. East

2. South

3. North

4. North east

5. None of these

Directions (21-25): In each question below is given a group of numbers/ symbols followed by four combinations of letter codes numbered (1), (2), (3) and (4). You have to find out which of the four combinations correctly represents the group of numbers/ symbols based on the following coding system and the conditions that follow and mark the number of that combination as your answer. If none of the combinations correctly represents the group of letters, mark (5) i.e. ‘None of these’ as your answer.

Condition:



(i)If the first element is a number and third element is a symbol, their codes are to be interchanged.

(ii) If both the first and last elements are symbols, their codes are to be interchanged .

(iii) If first element is a symbol and second last element is a number, both are to be coded as G.

Question No. 21 87@04$ Options :

1. ZQRLDF

2. RQZLDF

3. ZQRDLF

4. ZRQLDF

5. None of these

Question No. 22 %∆2?84 Options :

1. BMJEGD

2. GMJEGD

3. GMJEZD

4. BMJEZD

5. None of these

Question No. 23 @42?%$ Options :

1. RDJEBR

2. RDJEBF

3. FDJEBF

4. FDJEBR

5. None of these

Question No. 24 94%@90 Options :

1. TDBRTL

2. TDBRLT

3. TDBTRL

4. BDTRTL

5. None of these



Question No. 25 ∆8%?29 Options :

1. MZBEGT

2. MZBEJT

3. GZBEGT

4. GZBEJT

5. None of these

Directions (26-30):

Study the following information carefully and answer the given questions.

Eight people F, G, H, I, V, W, X and Y are sitting in two parallel rows containing four people each F, G, H and I are sitting in row -2 facing north and V ,W, X and Y are sitting in row 1 facing south (but not necessarily in the same order). Thus, each person sitting in row 2 faces another person sitting in row - 1. Each of the two rows consists of one Lawyer, one Teacher, one Clerk and one Astronomer (but not necessarily in the same order).

(i) The Lawyer of row 2 sits second to the right of I. W faces one of the immediate neighbours of I. Only one person sits between W and the Astronomer.

(ii) The one who faces the Astronomer of row 1 is an immediate neighbour of F. Only one person sits between F and the Clerk.

(iii) V sits second to the right of Y. X does not face H. The Astronomer of row 2 faces the Teacher of row 1.

(iv) H faces one of the immediate neighbor of Lawyer of row -1. The Lawyer of row 1 does not sit at any of the extreme ends of the line. Y is not a Lawyer.

Question No. 26 Which one of the following represents the people sitting at extreme ends of both the lines? Options :

1. G, I and W, X

2. G, I and Y, V

3. H, F and Y, W

4. F, I and W, Y

5. None of these

Question No. 27 Who amongst the following sits on the immediate left of Clerk of row 2? Options :

1. I

2. The Lawyer of row 1 3. The Teacher of row 1

4. H

5. G



Question No. 28 Which of the following pairs represent both the immediate neighbours of X? Options :

1. Y and the Astronomer of row 1

2. W and the Teacher of row 1

3. V and the Lawyer of row 1

4. W and the Clerk of row 1

5. V and the Clerk of row 1

Question No. 29 Which of the given statements is true with respect to the given arrangement? Options :

1. X sits on the immediate right of W.

2. G and Y face each other

3. H is an Astronomer

4. None of the given statement is true

5. The Teacher of one row faces the Lawyer of another row.

Question No. 30 If X and W interchange their places, so do I and Y, then who amongst the following faces F? Options :

1. X

2. I

3. G

4. V

5. None of these

Directions (31-35): Study the following information carefully and answer the given questions:

India played seven Hockey matches against Canada, Holland, Germany, Spain, Argentina, New Zealand and Australia, One against each team. The matches were held in seven different cities - Paris, Sydney, Durban, London, Auckland, Newyork and Shanghai - on seven consecutive days, starting on a Monday and ending on the following Sunday.

(i) India played exactly one match between the matches against Holland and Argentina.

(ii) The match against Spain was not held on Monday.

(iii) The match against New Zealand was not held in Auckland.

(iv) The match held in Shanghai happened before the match held in Paris.

(v) India played exactly one match between the match held in Paris and the match against Australia.

(vi) The match against Germany was not held in Paris.

(vii) The match against New Zealand was held immediately after the match against Germany, and immediately before the match against Australia.



(viii) The match held in Sydney happened a day before the match held in Auckland.

(ix) The match against Argentina was held in London on Friday.

(x) The match held in Durban was on Monday.

Question No. 31 With which of the following country India played against between the matches held against Holland and Argentina? Options :

1. Canada

2. Germany

3. Spain

4. New Zealand

5. None of these

Question No. 32 Match held in Durban was against which country? Options :

1. Germany

2. Holland

3. Spain

4. Canada

5. None of these

Question No. 33 On which day was the match held in Auckland? Options :

1. Wednesday

2. Thursday

3. Friday

4. Saturday

5. Sunday

Question No. 34 Match against New Zealand was held in which city? Options :

1. Durban

2. London

3. Paris

4. New York

5. Sydney



Question No. 35 Which one of the following combination is not true? Options :

1. Germany – Tuesday – Shanghai

2. Argentina –Friday – London

3. Holland – Sunday – New York

4. Canada – Monday – Durban

5. New Zealand – Thursday – Sydney

Directions (36-40): Study the information given below and answer the questions that follow.

In a certain code language,

“these eight segments” is written as “kam pur tum”,

“these comprise more than” is written as “pur vat cem bam” ,

“forty percent more than” is written as “cem mor vat rug”,

“weight percent than” is written as “rug jel vat”.

Question No. 36 How is “weight” written in this code language? Options :

1. Rug

2. Jel

3. Vat

4. Either 1 or 2

5. Cannot be determined

Question No. 37 How is “than” written in this code language? Options :

1. Pur

2. Cem

3. Vat

4. Bam

5. Kam

Question No. 38 How will “less percent than” be written in this code language? Options :

1. tum fat vat

2. cam fat mor

3. mor fat kam

4. rug fat vat

5. Either 2 or 4



Question No. 39 How will “eight than more” be written as in this code language? Options :

1. cem kam rug

2. cem kam vat

3. vat cem tum

4. Either 2 or 3

5. Either 1 or 3

Question No. 40 Which of the following is definitely a code for “forty eight thousand than”? Options :

1. mor vat kam sut 2. vat sut tum mor

3. tum vat cem sut

4. Either 1 or 2

5. Either 2 or 3

Section: Numerical Aptitude

Directions (41-45) In the following questions two equations numbered I and II are given. You have to solve both the equations. Give answer if;

Question No. 41 I. 10x² - 17x – 20 = 0

II. 15y² + 7 y – 4 = 0

Options :

1. x < y,

2. x>y,

3. x=y or no relationship cannot be established between x and y

4. x≥y,

5. x≤y



Question No. 42 I. 60x² - 49x – 49 = 0

II. 35y² - 24y – 35 = 0

Options :

1. x < y,

2. x>y,


4. x≥y,

5. x≤y

Question No. 43 I. 56x² - 123x + 55 = 0

II. 55y² - 144y + 81 = 0

Options :

1. x < y,

2. x>y,


4. x≥y,

5. x≤y

Question No. 44 I. 12x² + 47x + 40 = 0

II. 30y² - 13y - 3 = 0

Options :

1. x < y

2. x>y


4. x≥y

5. x≤y

Question No. 45 I. 63x² - 5x - 42 = 0

II. 27y² + 24y - 35 = 0

Options :

1. x < y,

2. x>y,


4. x≥y,

5. x≤y



Direction (46-50): What should come in place of the question mark (?) in the following number series?

Question No. 46 3600 600 120 30 10 ? Options :

1. (10)

2. (8)

3. (5)

4. (3)

5. None of these

Question No. 47 11 13 30 96 392 ? Options :

1. 1648

2. 1438

3. 1839

4. 1970

5. None of these

Question No. 48 25 28 26 29 27 ?

Options :

1. (35)

2. (30)

3. (28)

4. (25)

5. None of these

Question No. 49 362 452 550 656 770 892 ? Options :

1. 2014

2. 1024

3. 4201 4. 1022 5. None of these



Question No. 50

3 4 10 33 136 ?

Options :

1. 385 2. 685 3. 885 4. 985 5. None of these

Directions (51-55): What approximate value should come in place of the question-mark(?) in the following question (You are not expected to calculate the exact value).

Question No. 51

8734 ÷ 9 + 499.99 - 670.009 = ?

Options :

1. 780 2. 800 3. 820 4. 840 5. 850

Question No. 52

28% of 509 + 20.5% of 490 = ?

Options :

1. 232 2. 242 3. 252 4. 262 5. 272

Question No. 53

15.934 – 16.999 + 27.999 + 2.343 = ?

Options :

1. 29 2. 39 3. 49 4. 59 5. 69



Question No. 54

(51.99)² + (10.004)² = ?

Options :

1. 2604 2. 2704 3. 2804 4. 2904 5. 3004

Question No. 55

(34.99)² - (15.001)² = ?

Options :

1. 800 2. 900 3. 1000 4. 1100 5. 1200

Direction (56-60): Study the following pie chart and table carefully and answer the following questions given below:

Percentage of male students



Question No. 56

What is the ratio of the total number of male students of UPSC to the total number of female students of RBI?

Options :

1. 779:252 2. 38:73 3. 242:797 4. 252:779 5. None of these

Question No. 57

The total number of SSC students is approximately what percent of the total number of female students of SBI?

Options :

1. 327% 2. 337% 3. 299% 4. 319% 5. 239%

Question No. 58

What is the difference between the total number of female students of LIC and the female students of IBPS?

Options :

1. 255 2. 145 3. 355 4. 245 5. 105



Question No. 59 The female students of SSC is by what percent less than the total number of students of RBI and UPSC together? Options :

1. 49.6%

2. 67.6%

3. 39.6%

4. 79.6%

5. None of these

Question No. 60 What is the approximate average number of the female students of all the competitive exams together? Options :

1. 1924

2. 1761

3. 1671

4. 1821

5. 1931

Directions (61-65):

Total number of AC sold by two different companies LG and Voltas in different months (Sep, Oct, Nov and Dec) is 7500. Total number of AC sold by LG is two-third of total number of AC sold by the company Voltas. The percentage of total number of AC sold by LG in the month of Sep and Oct is 22% and 35% respectively. The total number of AC sold by LG in the month of Nov is 270 less than the total number of AC sold by the same company in the month of Dec. The percentage of total number of AC sold by Voltas in the month of Nov is 27%. The ratio of total AC sold by LG in Dec to that of total AC sold by Voltas in Sep is 2: 3. Total AC sold by LG in Sep is 315 less than the total AC sold by Voltas in the month of Oct.

Question No. 61 What is the difference between the total number of AC sold by LG in September to that of Voltas in December? Options :

1. 360

2. 480

3. 540

4. 640

5. None of these



Question No. 62 What is the ratio between the total number of AC sold by LG in the month of Oct to that of Dec? Options :

1. 25: 16

2. 35: 26

3. 45: 26

4. 35: 16

5. None of these

Question No. 63 Total AC's sold in the month of Nov is approximately what percentage of total AC sold in the month of Oct by both the companies together? Options :

1. 76 %

2. 62 %

3. 55 %

4. 85 %

5. None of these

Question No. 64 What is the average number of AC sold by Voltas except Nov month? Options :

1. 1095

2. 1355

3. 1105

4. 1245

5. None of these

Question No. 65 What is the difference between the total AC sold in the month of Sep to that of Dec by both the companies together? Options :

1. 90

2. 50

3. 65

4. 45

5. None of these



Directions (66-70):

What will come in place of Question mark ( ? ) ?

Question No. 66 1656 ÷ 23 + 2016 ÷ 36 – 920 ÷ 4 + 81 × 12 = ? Options :

1. 982

2. 789

3. 870

4. 1020

5. 625

Question No. 67 √? = 60% of 400 + 35% of 60 Options :

1. 62451

2. 68121

3. 63521

4. 64521

5. None of these

Question No. 68 3928 ÷ 8 × 2 + 563 – 257 = ? Options :

1. 1124

2. 1288

3. 1265

4. 1324

5. 1285

Question No. 69 82% of 2850+ 44% of 3200 – 56% of 440 = ? Options :

1. 3650.2

2. 3487.6

3. 3412.05

4. 3498.6

5. 3695.4



Question No. 70 35 × 8 + 56 – 98 =? + 60 Options :

1. 178

2. 247

3. 142

4. 206

5. None of these

Question No. 71 Two trains each 520 m long are running in opposite direction on parallel tracks. Their speeds are 108 km/hr and 36 km/hr respectively. Find the time taken by the slower train to pass the driver of the faster train. Options :

1. 36 sec

2. 20 sec

3. 13 sec

4. 27 sec

5. None of these

Question No. 72 In place of 14% profit a watch is sold at 37% profit and the seller gets Rs. 179.40 more. Find the selling price of the watch if it was sold at 35% profit. Options :

1. Rs. 1053

2. Rs. 897

3. Rs. 1008

4. Rs. 700

5. None of these

Question No. 73 The average weight of 3 ladies - M, N, and O is 55 kg. Another lady P joins the group and the average now becomes 54 kg. If another lady Q, whose weight is 2 kg more than that of P, replaces M, then the average weight of N, O, P, and Q becomes 52 kg. The weight of M is: Options :

1. 61 kg

2. 64 kg

3. 65 kg

4. 68 kg

5. None of these



Question No. 74 Tiger purchased a guitar for Rs. 52000. He sold it at a loss of 13%. With that money he purchased another guitar and sold it at a profit of 15%. What so his overall loss/profit?

Options :

1. 26 profit

2. 12 profit

3. 12 loss

4. 26 loss

5. None of these

Question No. 75 Rajat is 11 years elder then his brother and 3 years younger than her sister Gauri. When Gauri was born, her father’s age was 25 and when Rajat’s brother was born his mother’s age was 31. Find the difference between ages of Rajat’s father and his mother. Options :

1. 9 years

2. 6 years

3. 5 years

4. 8 years

5. 2 years

Question No. 76 Find the difference between the simple interest and the compound interest at 2.5% per annum for 2 years on principal of Rs. 40000. Options :

1. ₹ 30

2. ₹ 42

3. ₹ 20

4. ₹ 24

5. None of these

Question No. 77 A, B and C can do a piece of work in 24, 36 and 54 days respectively. They all started work together & after 2 days A left. B left 3 days before the completion of work. In how many days total work be completed? Options :

1. 157/9 days

2. 216/10 days

3. 243/12 days

4. 363/14 days

5. None of these



Question No. 78 Find the number of ways in which the words can be formed with the letters of the word ‘MAGNETS’ beginning with M and ending with S. Options :

1. 36 ways

2. 120 ways

3. 96 ways

4. 24 ways

5. None of these

Question No. 79 A man takes 5 hours 45 minutes to row a boat 115 km downstream of a river and 4 hours 30 minutes to cover a distance of 72 km upstream. Find the speed of the river current in km/hr. Options :

1. 2 km/hr

2. 5 km/hr

3. 6 km/hr

4. 4 km/hr

5. None of these

Question No. 80 In what ratio must a grocer mix two varieties of sugar worth Rs 50 a Kg and Rs 60 a Kg so that by selling the mixture at Rs 60.50 a Kg he may gain 10%?

Options :

1. 1:4

2. 3:2

3. 1:1

4. 1:6

5. None of these



Answers and Explanations

Question.1. Answer : Option 3 Explanation: All pearls are diamonds (A) + All diamonds are gold (A) ⇒ All pearls are gold (A) + All gold are

silvers(A) ⇒ All pearls are silvers(A).. Hence conclusion I follows.

All diamonds are gold (A) ⇒ I.I ⇒ Some diamonds are gold (I). Hence conclusion II does not follow.

All diamonds are gold (A) + All gold are silvers(A) ⇒ All diamonds are silver(A) ⇒ Conversion

⇒ Some silvers are diamonds. Hence conclusion III follows.

Alternate Method:

Question.2. Answer : Option 2 Explanation: All colours are rainbows (A) + No rainbow is a shower(E) ⇒ No colour is a shower(E) ⇒ conversion ⇒ Some showers are not colours (O). Hence conclusion I does not follow but conclusion II follows.

Some paintings are colours(I) + All colours are rainbows(A) ⇒ Some paintings are rainbows(I). Hence conclusion III does not follow.

Alternate Method:



Question.3. Answer : Option 4 Explanation: Some boats are sails (I) + No sail is a sailor (E) ⇒ Some boats are not sailors (O). Hence conclusion I does not follow but conclusion III follows.

Some ships are boats(I) + Some boats are sails(I) ⇒ No conclusion. Hence conclusion II does not follow.

Alternate Method:

Question.4. Answer : Option 2 Explanation: All trolleys are luggage(A) + Some luggage is a warehouse(I) ⇒ No conclusion. Hence conclusion I does not follow .

All trolleys are luggage(A)) ⇒ Conversion ⇒ Some luggage are trolleys(I).. Hence conclusion II follows.

Some bags are trolleys(I) + All trolleys are luggage(A) ⇒ Some bags are lugguage(I)+ Some luggage

is a warehouse(I) ⇒ No conclusion. Hence conclusion III does not follow.

Alternate Method:

Question.5. Answer : Option 2 Explanation: Some pants are trousers(I) + No trouser is a shirt(E) ⇒ Some pants are not shirts (O). Hence, conclusion I do not follow.



No trouser is a shirt (E)⇒ Conversion ⇒ Some shirts are not trousers(O). Hence, conclusion II do not follow.

No trouser is a shirt(E) + All shirts are ties(A) ⇒ Some ties are not trousers(O*). Hence, conclusion III follows.

Alternate Method:

Question.6. Answer : Option 4 Explanation: Decoding statement : V < W, W ≥ T, T ≤ H

Combined Inequalities : V < W ≥ T ≤ H

V < W ≥ T ≤ H No relationship can be established between V and T. Hence conclusion I does not follow.

V < W ≥ T ≤ H No relationship can be established between H and W. Hence conclusions II does not follow.

Question.7. Answer : Option 2 Explanation: Decoding statement : H > M, M ≥ E, W, E < C

Combined Inequalities : H > M ≥ E < C

H > M ≥ E < C No relationship can be established between C and M. Hence conclusion I does not follow.

H > M ≥ E < C ∴ H > E. Hence conclusions II follows.

Question.8. Answer : Option 5 Explanation: Decoding statement : A ≥ B, B = D, D > E

Combined Inequalities : A ≥ B = D > E

A ≥ B = D > E ∴ A ≥ D. Hence conclusion I follows.

A ≥ B = D > E ∴ A > E. Hence conclusions II follows.



Question.9. Answer : Option 3 Explanation: Decoding statement : X ≥ Y, Y > Z , Z < A

Combined Inequalities : X ≥ Y > Z < A

X ≥ Y > Z < A No relationship can be established between X and A. Hence Either conclusion I or conclusions II will follow.

Question.10. Answer : Option 1 Explanation: Decoding statement : P ≤ Q, Q > R, R ≥ S

Combined Inequalities : P ≤ Q > R ≥ S

P ≤ Q > R ≥ S Q > S. Hence conclusion I follows.

P ≤ Q > R ≥ S Q > S. Hence conclusions II does not follow.

Question.11. Answer : Option 4 Explanation: (i) Only three people sit to the left of K. G sits second to the right of K. Q is not an immediate neighbor of K. (ii) Q does not sit at any of the extreme ends of the line. H sits third to the left of Q. Both the immediate neighbors of Q face south. There is a possibility of two cases:

(iii) B sits second to the left of P. As many people sit between K and B as between K and J. Here Case 1 will not follow. So, Case 1 will be discarded.



(iv) Immediate neighbors of H face opposite directions(i.e., if one person faces north then the other person faces south and vice-versa). (v) A faces north. J and H face direction opposite to A (i.e If A faces north then both J and H face south and vice-versa). Therefore the final arrangement is:



(iv) Immediate neighbors of H face opposite directions(i.e., if one person faces north then the other person faces south and vice-versa).



(v) A faces north. J and H face direction opposite to A (i.e If A faces north then both J and H face south and vice-versa). Therefore the final arrangement is:






Question.14. Answer : Option 3 Explanation: (i) Only three people sit to the left of K. G sits second to the right of K. Q is not an immediate neighbour of K. (ii) Q does not sit at any of the extreme ends of the line. H sits third to the left of Q. Both the immediate neighbours of Q face south. There is a possibility of two cases:





Question.16. Answer : Option 4 Explanation:

\ Question.17. Answer : Option 3 Explanation:






Question.21. Answer : Option 2 Explanation: Condition I applied:

@ 7 8 0 4 $

R Q Z L D F

Question.22. Answer : Option 2 Explanation: Condition III applied:

Question.23. Answer : Option 4 Explanation: Condition II applied:

@ 4 2 ? % $

F D J E B R

Question.24. Answer : Option 4 Explanation: Condition I applied:



Question.25. Answer : Option 3 Explanation: Condition III applied:

Question.26. Answer : Option 3 Explanation: (i) The Lawyer of row 1 sits second to the right of I. W faces one of the immediate neighbours of I. Only one person sits between W and the Astronomer. There will be two Cases:

(ii) The one who faces the Astronomer of row 2 is an immediate neighbour of F. Only one person sits between F and the Clerk. (iii) V sits second to the right of Y. X does not face H. The Astronomer of row 1 faces the Teacher of row 2.



(iv) H faces one of the immediate neighbor of Lawyer of row -2. The Lawyer of row 2 does not sit at any of the extreme ends of the line. Y is not a Lawyer. Now here Case 2 will not follow. So, Case 2 will be discarded.

Therefore the final arrangement is:




Question.36. Answer : Option 2 Explanation: These – pur

Eight/ segments – kam/tum

More – cem

Forty – mor

Percent – rug

Than – vat

Weight – jel

comprise – bam



More – cem

Forty – mor

Percent – rug

Than – vat

Weight – jel

comprise – bam



More – cem

Forty – mor

Percent – rug

Than – vat

Weight – jel

comprise – bam





More – cem

Forty – mor

Percent – rug

Than – vat

Weight – jel

comprise – bam



More – cem

Forty – mor

Percent – rug

Than – vat

Weight – jel

comprise – bam

Question.41. Answer : Option 3 Explanation: I. 10x² - 17x – 20 = 0

10x² + 8x - 25x – 20 = 0

2 x(5 x + 4) – 5(5 x + 4) = 0

(2 x – 5) (5 x + 4) = 0

∴ x = 5/2 , -4/5

II. 15y² + 7 y – 4 = 0

15y² - 5y + 12 y – 4 = 0

5 y(3 y – 1) + 4(3 y – 1) = 0

(3 y – 1) (5 y + 4) = 0

∴y = -4/5 , 1/3

Hence, no relationship cannot be established between x and y.



Alternate Solution:

Here it is no need to solve the equations,

The roots of x are + & - and the roots of y are also even + & -.


Question.42. Answer : Option 3 Explanation: I. 60x² - 49x – 49 = 0

60x² - 84x + 35 x – 49 = 0

12 x(5 x – 7) + 7(5 x – 7) = 0

(12 x + 7) (5 x – 7) = 0

∴ x = -7/12 , 7/5

II. 35y² - 24y – 35 = 0

35y² + 25 y - 49y – 35 = 0

5 y(7 y + 5) – 7(7 y + 5) = 0

(5 y – 7) (7 y + 5) = 0

∴y = 7/5 ,-5/7


Question.43. Answer : Option 3 Explanation: I. 56x² - 123x + 55 = 0

56x² - 88x - 35x + 55 = 0

8 x(7x – 11) – 5(7x – 11) = 0

(8 x – 5) (7 x – 11) = 0

∴ x = 5/8 , 11/7

II. 55y² - 144y + 81 = 0

55y² - 45y - 99 y + 81 = 0

5 y(11 y – 9) – 9(11y -9) = 0

(5 y – 9) (11 y – 9) = 0

∴ y = 9/5 , 9/11

Hence, relationship cannot be established.



Question.44. Answer : Option 1 Explanation: I. 12x² + 47x + 40 = 0

12x² + 15x + 32x + 40 = 0

3x (4x + 5) + 8 (4x + 5) = 0

(3 x + 8) (4 x + 5) = 0

∴x = -8/3, -5/4

II. 30y² - 13y - 3 = 0

30y² + 5y - 18 y - 3 = 0

5 y (6 y + 1) – 3(6 y + 1) = 0

(5 y – 3) (6 y + 1) = 0

∴y = 3/5 ,-1/6

Hence, x < y

Question.45. Answer : Option 3 Explanation: I. 63x² - 5x - 42 = 0

63x² + 49x - 54x - 42 = 0

7 x(9 x + 7) – 6(9 x + 7) = 0

(7 x – 6) (9 x + 7) = 0

∴ x = 6/7, -7/9

II. 27y² + 24y - 35 = 0

27y² + 45y - 21y - 35 = 0

9 y(3 y + 5) – 7(3 y + 5) = 0

(9 y – 7) (3 y + 5) = 0

∴y = 7/9, -5/3

Hence, relationship cannot be established

Question.46. Answer : Option 3 Explanation: 3600 ÷6 = 600

600 ÷5 = 120

120 ÷4= 30

30 ÷3 = 10

10 ÷2 = 5



Question.47. Answer : Option 4 Explanation: 11 × 1 + 2 = 13

13 × 2 + 4 = 30

30 × 3 + 6 = 96

96 × 4 + 8 = 392

392 × 5 + 10 = 1970

Question.48. Answer : Option 2 Explanation: Alternate series :

25 + 1 = 26

28 + 1 = 29

26 + 1 = 27

29 + 1 = 30

Other method

25 + 3 = 28

28 - 2 = 26

26 + 3 = 29

29 - 2 = 27

27 + 3 = 30

Question.49. Answer : Option 4 Explanation: 362 + 90 = 452

452 + 98 = 550

550 + 106 = 656

656 + 114 = 770

770 + 122 =892

892 + 130 = 1022

Question.50. Answer : Option 2 Explanation: 3 x 1 + 1 =4

4 x 2 + 2 = 10

10 x 3 + 3 = 33



33 x 4 + 4 = 136

136 x 5 + 5 = 685

Question.51. Answer : Option 2 Explanation: 8734 ÷ 9 + 499.99 - 670.009 = ?

= 970 + 500 – 670

= 800

Question.52. Answer : Option 2 Explanation: 28% of 509 + 20.5% of 490 = ?

142 + 100

= 242

Question.53. Answer : Option 1 Explanation: 15.934 – 16.999 + 27.999 + 2.343 = ?

16 – 17 + 28 + 2 = 29

Question.54. Answer : Option 3 Explanation: (51.99)² + (10.004)² = ?

52² + 10²

= 2704 + 100

= 2804


(34.99)² - (15.001)² = ?

35² - 15²

= 1225 – 225

= 1000



Question.56. Answer : Option 4 Explanation: Number of male students of UPSC = 21/100 × 24/100 × 15,000 = 756

Total number of female students of RBI = 19/100 × 82/100 × 15,000 = 2337

Required ratio = 756:2337 = 252:779

Alternate Method:

Number of male students of UPSC = 21% × 24%× 15,000

Total number of female students of RBI = 19% × 82% × 15,000

Required ratio =21% × 24%× 15,000:19% × 82% × 15,000 = 21 × 24: 19×82

=21 × 12:19×41

= 252:779

Question.57. Answer : Option 2 Explanation: Number of SSC students = 17/100 × 15,000 = 2,550

Number of female students of SBI = 14/100 × 36/100 × 15,000 = 756

Required percent = 2550/756 × 100 = 337.30%

Question.58. Answer : Option 1 Explanation: Number of female students of LIC = 15/100 × 68/100 × 15,000 = 1,530

Number of female students of IBPS = 14/100 × 85/100 × 15,000 = 1,785

Required difference = 1,785 – 1,530 = 255

Question.59. Answer : Option 4 Explanation: Number of female students of SSC = 17/100 × 48/100 × 15,000 = 1,224

Number of students of RBI and UPSC = (19 + 21) % of 15,000 = 40/100 × 15,000 = 6,000

Required percent = (6000 -1224)/6000 × 100 = 79.6%

Question.60. Answer : Option 3 Explanation: Number of female students of LIC = 15/100 × 68/100 × 15,000 = 1,530

Number of female students of IBPS = 14/100 × 85/100 × 15,000 = 1785

Number of female of students of SSC = 17/100 × 48/100 × 15,000 = 1,224



Number of female of students of UPSC = 21/100 × 76/100 × 15,000 = 2,394

Number of female of students of SBI = 14/100 × 36/100 × 15,000 = 756

Number of female of students of female RBI = 19/100 × 82/100 × 15,000 = 2337

Required average = 10026/6 = 1671


The total AC sold by LG in the month of Sep = 660

The total AC sold by Voltas in the month of Dec = 1140

Required difference = 1140 – 660 = 480


The total AC sold by LG in the month of Oct = 1050

The total AC sold by LG in the month of Dec = 780

Required ratio = 1050: 780

= 35: 26




Total AC sold in the month of Nov by both the companies together = 510 + 1215 = 1725

Total AC sold in the month of Oct by both the companies together = 1050 + 975 = 2025

Required % = (1725/2025) x 100

= 85.18 %

= 85 % approx


The average number of AC sold by Voltas except Nov month = (1170 + 975 + 1140)/3

= 3285/3

= 1095




The total AC sold in the month of Sept by both the companies together = 660 + 1170 = 1830

The total AC sold in the month of Dec by both the companies together = 780 + 1140 = 1920

Required difference = 1920 – 1830 = 90

Question.66. Answer : Option 3 Explanation: 1656 ÷ 23 + 2016 ÷ 36 – 920 ÷ 4 + 81 × 12 = ? 72 + 56 - 230 + 972 = ? ? = 870 Question.67. Answer : Option 2 Explanation: √? = 60% of 400 + 35% of 60 √? = 240 + 21 √?= 261 ⇒ ? = 68121 Question.68. Answer : Option 2 Explanation: 3928 ÷ 8 × 2 + 563 – 257 = ? ?= 982 + 563 – 257 = 1288 Question.69. Answer : Option 4 Explanation: 82% of 2850+ 44% of 3200 – 56% of 440 = ?



= 2337 + 1408 - 246.4 ? = 3498.6

Question.70. Answer : Option 1 Explanation: 35 × 8 + 56 – 98 =? + 60

? = 280 + 56 – 158 = 178 Question.71. Answer : Option 3 Explanation: Length of the train = 520 m

Speed = 108 + 36 = 144 × 5/18 = 40 m/s

Time taken = 520/40 = 13 sec.

Question.72. Answer : Option 1 Explanation: Let the CP of the watch be Rs. x

According to the question,

x * 137/100 – x * 114/100 = 179.40

137x – 114x = 179.40 x 100

23x = 179.40 x 100

x = 780

Required selling price = 780 x 135/100 = Rs. 1053

Alternate method:

Difference in profit = 37 – 14 = 23

Now, 23% ≡ 179.40

135% = 179.40 * 135 / 23 = Rs. 1053

Question.73. Answer : Option 1 Explanation: Let M, N, O, P and Q represent their respective weights. Then,

M + N + O = (55 * 3) = 165 kg,

M + N + O + P = (54 * 4) = 216 kg.

P = (216 - 165) kg = 51 kg,

Q = (51 + 2) kg = 53 kg.



N + O + P + Q = (52 * 4) = 208 kg.

Now, (M + N + O + P) - (N + O + P + Q) = (216 - 208) kg = 8 kg.

M - Q = 8

=> M = (8 + Q) = 61 kg.


First selling price = 52000* 87/100 = Rs. 45240

Second selling price = 45240 * 115/100 = Rs. 52026

Profit = 52026 – 52000 = 26

Question.75. Answer : Option 4 Explanation: Let his Rajat’s brother’s age be ‘x’. Rajat’s age = x+11 Gauri’s age = x+ 11 + 3 = x + 14 Father’s age = x+14+25 = x+39 Mother’s age = x+31 Difference = x+39 –(x+31) = 8 years Question.76. Answer : Option 5 Explanation: The difference between compound interest and simple interest for 2 years = P(r/100)2

Here, Principal (P) = Rs. 40000

Rate (r) = 2.5%

Now difference, D = (40000×2.5×2.5)/(100×100)

D = Rs. 25

Question.77. Answer : Option 2 Explanation: Let total work = LCM of 24, 36 and 54 = 216 units

A's 1 day work = 9 units, B's 1 day work = 6 units & C's 1 day work = 4 units

Total work completed by all in 2 days = (9+6+4) × 2 = 38 units

In last 3 days C alone worked so his work in last 3 days = 3 × 4 = 12 units

So remaining work = 216 - 38 - 12 = 216 - 50 = 166 units, which is completed by B & C togther so they completetd it in = 166/(6+4) = 166/10 days

So total work completed in = 2 + (166/10) + 3 = 216/10 days.



Question.78. Answer : Option 2 We have to arrange three letters (A, G, N, E and T).

So, required no. of ways = 5! = 120 ways

Question.79. Answer : Option 1 Explanation: Speed downstream = Distance/time = (115 × 4)/23 = 20 km/hr

{5 hrs 45 min = 5(3/4) = 23/4 hours}

speed upstream = distance/time = (72 × 4 )/9 = 16 km/hr

{4 hrs 30 min = 4(1/2) = 9/2 hours}

therefore, speed of the current = 1/2 (20 - 16) = 2 km/hr

Question.80. Answer : Option 3 Explanation: Selling price of Ist Sugar Selling price of IInd Sugar

ibps rrb office assistant prelims mock test 1 - ixambee

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