ibps data interpretation & maths_ high priority areas, shortcuts

8/11/2019 IBPS Data Interpretation & Maths_ High Priority Areas, Shortcuts

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[Studyplan] IBPS CWE PO/MT: Quantitative Aptitude, Maths, Data Interpretation (DI), Speed Maths

1. IBPS Data Interpretation & Maths: Internal breakup

2. Ignore following topics

3. Speed Maths

4. Booklist for IBPS Data Interpretation & Quantitative Aptitude

5. #1: Data Interpretation (DI)

6. #2: BODMAS/Simplification

7. #3: Number sequence-series

8. #4: Linear Equations

9. #5: Permutation-Combination-Probability10. #6: Average

11. #7: Ratio-Proportion-variations

12. #8: Percentages, profit-loss, SI-CI

13. #9: Number theory and Remainders

14. #10: Geometry (Area-Volume-Perimeter)

15. #11: Time-Speed-Work-Distance

IBPS Data Interpretation & Maths: Internal breakup

Topicwise Breakup IBPS CWE PO/MT 2011 2012
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Data Interpretation (DI) 20 15

BODMAS/Simplification 10 10

number sequence-series(although reasoning topic but asked here) 5 5

Linear Equation 4 3

Permutation-Combination-Probability 5 2

Average 2 1

%, profit loss, simple-compound interest 2 3

Ratio-Proportion-Variation 2 3

Number theory (Remainders) 0 1

Time-Speed-Work 0 1Geometry (Area-Volume-Perimeter) 0 6

total 50 50

Obviously high priority = DI + BODMAS + Sequence-series.

And, Although not many questions are coming from the individual topics of percentages, profit loss, simple-compound

interest, Time-speed-word, ratio, averages etc. but collectively, these topics help you raise your score by atleast 10

marks. Hence their Cost:Benefit is quite good. (compared to the amount of data youve to memorize to get 10 marks out

of Misc.GK/Sports/Persons in News type MCQs.) Therefore, donot run away from Maths, prepare it diligently.

Ignore following topics

1. Quadratic equations (ax2+bx+c=0)

2. Geometry theory (except area-volume-perimeter)3. Trigonometry

4. Coordinate Geometry

5. logarithm

Speed Maths

In Both previous years, at least 25 out of 30 questions came from Data interpretation+ BODMAS only

for both these topics, speed Maths=essential. Although internet is full of techniques of Speed Maths, Vedic Maths, but

you must atleast master following techniques:

1. Trachtenbergs Techniques for:

a. Multiplication by 5. It also indirectly helps you find out half (50%)of the given number as well. Because

mx5= 10m/2. This helps you eliminate wrong answers quickly whenever youve find percentages.b. Multiplication by 9. It indirectly helps you guestimate the division by 11 as well. Because m/11=~0.9m

c. Quick multiplication by 11. It indirectly helps you guestimate the number division by 9 as well. Because

m/9=~0.11m

here is the wiki link: http://en.wikipedia.org/wiki/Trachtenberg_system

2. Two digit division / long division / percentages approximation explained on

http://mrunal.org/2012/11/aptitude-long-division-two-digit-division-calculation-without-tears-and-without-boring-vedic-

speed-maths.html

3. Divisibility rules for various numbers (Given in NCERT, Quantitative aptitude books)

4. Multiplication tables of 2 to 9, 12 to 25 must be learned by heart. Especially the tables of 13, 17, 19 and 23.

5. Squares upto 29 and cubes upto 12 (required for the sequence-series questions and BODMAS)6. After that, as per your time and mood, learn the Vedic math techniques for finding cube-roots, square-roots of large

numbers; three-digit multiplication etc.etc.etc.

Booklist for IBPS Data Interpretation & Maths

NCERT Maths

for clearing the basic concepts: all of them available at Mrunal.org/download

Mrunal.org/aptitude
http://mrunal.org/2012/11/aptitude-long-division-two-digit-division-calculation-without-tears-and-without-boring-vedic-speed-maths.htmlhttp://en.wikipedia.org/wiki/Trachtenberg_system


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for simplified techniques on %, Compound interest, permutation-combination-probability etc.

Any one BankPO

paperset

Require mainly for the Data interpretation practice.

1. Arihants paperset of previous Bank PO exams

2. Kiran Prakashans Practice book workbook for IBPS PO/MT (with FREE CD for computer test)

3. If youve paperset from any other publication, thatll also work just fine.

Any one book on

Maths/Quantitative

Aptitude

Im biased for Sarvesh Kumar (Quantam CAT) by Arihant Publication

Reason: for the given price range Sarvesh Kumar helps in all competitive exams:

starting from SSC CGL, PSU, IBPS, UPSC to all the way upto CAT.

While its competitors (RS.Aggarwal, M.Tyra etc) start biting dust when it comes to

geometry-theory, trigonometry, and quadratic equations for SSC-CGL and CDS.

However, As far as IBPS is concerned, all books work fine.

Hell, You can even do without a book, by combo of NCERTs+ mrunal.org/aptitude

+practice papersets.

#1: Data Interpretation (DI)

Can be of two types

DI with photo (Chart) without photo

Example

1. pie chart

2. bar graphs

3. line graphs

1. Paragraph/caselets (youre given a lengthy paragraph on how a company

has total 1200 workers out of them 500 are males and 300 union-workers

etc.etc.etc.)

2. Youre given a big table about temperature, number of students in

university etc. and youve solve questions based on that.

Essential

Skill

1. percentage:

calculation and

approximation

2. multiplication and

long division (two-

digit division)3. Ratios

Addition-subtraction. (although sometimes will require %, ratio, division as

well.)

How is Bank DI different from other exams?

In SSC CGL, LIC, State PCS exams, usually chart- based simple case. Doesnt involve lengthy calculations.

In IBPS/Bank PO, even if chart-based DI is asked, often youll be given an additional table showing ratio/sales etc.

So youve to utilize the information from both chart + table to derive the answers.

How to approach?

Data interpretation doesnt have much theory, except in pie-chart case (about conversion between % and circle degrees +

when and where will the answer = data-insufficient)

1. First master the minimum speed math techniques given above.

2. Understand the Ratio related concepts.

3. Understand the basic concepts of bar graph, pie-charts etc. from Class 11 NCERT Statistics.

4. Then start solving DI questions given the paperset book (Arihant/ Kiran)

#2: BODMAS/Simplification

Bank exams (PO and Clerk) have an unwritten rule: first 10-12 questions must be from BODMAS.

Here are two sample questions

1. [Square root (6354)] x 34.993=?
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2. 39.89% of 4331 divided by 58.779% of 5003=?

#1: first clear you basic concepts about following

Simpl ifi cation (BODMAS) NCERT Class 8 Chap 1

Surds, indices1. NCERT Class 8 Chap 12

2. Then NCERT Class 9 Chap 1

Roots, squares, Cubes Basics from NCERT Class 8 Chap 6 and 7.

#2: then master the speed math techniques I listed earlier.

#3: Have a target of solving atleast 10 questions from your paperset every night, before going to sleep.

#3: Number sequence-series

Although it is a reasoning topic, but theyve asked it in Maths section. Consider following examples from previous IBPS

papers

Q. In the following number series, only one number is wrong. Find out the wrong number

8424, 4212, 2106, 1051, 526.5, 263.25, 131.625

Answer-choices

A. 131.625

B. 1051

C. 4212

D. 8424

E. 263.25

Preparation source

1. for the warm up exercise, go through chapter 3 (Classification) of RS Aggarwals Reasoning book

2. Then maximum practice, go through your paperset book.

Bad thing about such questions: Sometimes youll be able to decipher the pattern within a minute, and sometimes, even

after doing trial-error for more than 15 minutes, you might not see the pattern. Therefore, my suggestion is: during theexam, you put the entire set of sequence-series questions on mark and review. (And when youre done with other

sections, come back and solve these questions at the end of exam.) Dont waste initial momentum here.

#4: Linear Equations

Another reliable area in IBPS. Sometimes, youll need to apply concepts of linear equations, to tackle questions from

Time-speed-distance, ratio-proportion-variation, averages etc as well.

Here are some samples questions from previous exams:

1. Rubina could get equal number of Rs. 55, Rs. 85 and Rs. 105 tickets for a movie. She spends Rs. 2940 for all the

tickets. How many of each did she buy?

2. The ratio of the present age of Manisha and Deepali is 5 : X. Manisha is 9 years younger than Parineeta. Parineetasage after 9 years will be 33 years. The difference between Deepalis and Manishas age is the same as the present

age of Parineeta. What should come in place of X?

3. Akash scored 73 marks in subject A. He scored 56% marks in subject B and X marks in subject C. Maximum marks

in each subject were 150.The overall percentage marks obtained by Akash in all the three subjects together were

54%. How many marks did he score in subject C ?

Two things to be kept in mind, while solving questions on linear equation:

#1: keep minimum variables

Suppose the question runs like this The sum of present ages of father and son is 56, and 5 years ago Sons age


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was.blah blah blah.find the present age of Father.

avoid this do this

assume fathers present age f

sons present age s

assume fathers present age f

assume Sons present Age=(56-f)

here you assumed two variables f and s= l engthier

calculations and chances of mistakes.

here youve to worry about only

one variable f

#2: Cannot be determined

Suppose you end up with two equations like this:

I. x+y=5

II. y+z=6

Here youve two equations but three variables (x, y and z). You can never find out the unique value of x, y, z in such

situation. Hence answer = Cannot be determined.

But sometimes, even two variable-two equation set can be impossible to solve. For example

No solution infinite solution

I. x+ 2y=4

II. 2x+ 4y= 122x+ 3y=94x+ 6y=18

To learn more about ^this, refer to NCERT Maths Class 10, Chapter3, table given on the page #9.

Preparation source for Linear Equations

1. Understand basic concepts from

a. NCERT Class 8 Chap 2 and 9.

b. Then NCERT Class 9 Chap 4

c. Lastly NCERT Class 10 Chap 3.

2. Then maximum practice from your Quantitative Aptitude book and OR paper set book.

#5: Permutation-Combination-Probability

Most of that can be solved without memorizing any formulas. In my opinion, this is the easiest of all math problems. Go

through following articles

Permutation-Combination

1. [Aptitude] Permutation Combination made easy without Formulas

2. [Aptitude] Combination: Coins possible Sums (without formula)

3. [Aptitude] PnC: arrange such that two people Always sitting together?

4. [Aptitude] PnC: How many Ways to arrange letters of word RECUPERATE (Permutation without Formulas)

5. [Aptitude] PnC Arrange digits in ascending order to form numbers (asked in UPSC 2009)6. [Aptitude] PnC: Conditional Selection in Committee

7. [Aptitude] PnC: Binomial Expansion. How many ways to select one or more out of given Items?

Probability

1. [Aptitude] Probability Made Easy (Extension of Permutation Combination Concept!)

2. [Aptitude] Probability : Two Dice problems Sums and multiples

Then solve maximum questions from your Paperset book.

Sample Questions from previous exams
http://mrunal.org/2012/04/aptitude-probability-two-dice-problems.htmlhttp://mrunal.org/2012/03/aptitude-probability-made-easy.htmlhttp://mrunal.org/2012/05/aptitude-pnc-binomial-expansion-how.htmlhttp://mrunal.org/2012/04/aptitude-pnc-conditional-selection-in.htmlhttp://mrunal.org/2012/03/aptitude-pnc-arrange-digits-in.htmlhttp://mrunal.org/2012/03/aptitude-pnc-how-many-ways-to-arrange.htmlhttp://mrunal.org/2012/03/aptitude-pnc-arrange-such-that-two.htmlhttp://mrunal.org/2012/03/aptitude-combination-coins-possible.htmlhttp://mrunal.org/2012/03/aptitude-permutation-combination-made.html


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1. (IBPS 2011) An urn contains 4 green, 5 blue, 2 red and 3 yellow marbles. Answer following questions

1. If two marbles are drawn at random, what is the probability that both are red or at least one is red?

2. If three marbles are drawn at random, what is the probability that at least one is yellow?

3. If eight marbles are drawn at random, what is the probability that there are equal numbers of marbles of each

colour?

4. If three marbles are drawn at random, what is the probability that none is green?

5. If four marbles are drawn at random, what is the probability that two are blue and two are red?

2. (IBPS 2012) A bag contains 13 white and 7 black balls. Two balls drawn at random, what is the probability that both

are of same color?

3. (IBPS 2012) In How many different ways can the letters of the word THERAPY can be arranged so that the vowels

never come together?

#6: Average

Go through following articles, then maximum practice from your paper set book.

1. [Aptitude] Averages: Entry / Removal of 1 element => Increase / Decrease in Average Shortcut method explained

2. [Aptitude] Averages: More than two elements added / removed : shortcut technique explained

Sample questions

1. The average marks in English of a class of 24 students is 56. If the marks of three students were misread as 44, 45

and 61 in lieu of the actual marks 48, 59 and 67 respectively, then what would be the correct average?

2. The sum of the ages of 4 members of a family 5 years ago was 94 years. Today, when the daughter has been married

off and replaced by a daughter-in-law, the sum of their ages is 92. Assuming that there has been no other change in

the family structure and all the people are alive, what is the difference in the age of the daughter and the daughter-in-

law?

3. In an entrance examination, Ritu scored 56 percent marks, Smita scored 92 percent marks and Rina scored 634

marks. The maximum marks of the examination is 875. What is the average marks scored by all the three girls

together?

Alligations (Wine-Water Mixture)

Although not asked in previous exams but since it is an allied topic of averages, so just to be safe, go through following

articles

1. [Aptitude] Alligations,Mixtures,Alloys: Water,Milk,Wine mixing: Weighted Average Made Easy for CSAT,CAT,CMAT,IBPS

Aptitude2. [Aptitude] Alligation: Advanced applications in Interest rates, Profit-loss, Average Wages (Wine-Water Concept)

#7: Ratio-Proportion-variations

NCERT Class 8 Chap 13.

then max practice from your Quantitative Aptitude book and or papersets

Also prepare the allied topic: Partnership, using this article http://mrunal.org/2012/05/aptitude-partnership-and-profit-

sharing.html

Sample Questions from previous papers

1. A certain amount was to be distributed among A, B and C in the ratio 2 : 3 : 4 respectively, but was erroneously

distributed in the ratio 7 : 2 : 5 respectively. As a result of this, B got? 40 less. What is the amount?2. Rs.73,689 are divided between A and B in the ratio 4 : 7. What is the difference between thrice the share of A and

twice the share of B?

3. The fare of a bus is X for the first five kilometers and 13/- per kilometer thereafter. If a passenger pays Rs. 2402/-

for a journey of 187 kilometers, what is the value of X?

#8: Percentages, profit-loss, SI-CI

No need to mugup any formulas. Can be solved effortlessly, just go through following articles

1. [Aptitude] Concepts of Marked Price and Successive Discounts (Profit-Loss) without (stupid) formulas

2. [Aptitude] Compound Interest Rate, Population Growth without Formulas

3. [Aptitude] Product Consistency: If Sugar price increases then consumption should be Decreased by What %, Time-Speed-Distance
http://mrunal.org/2013/01/aptitude-product-consistency-shortcuts-ssc-ibps-csat-cat.htmlhttp://mrunal.org/2012/04/aptitude-compound-interest-rate.htmlhttp://mrunal.org/2012/11/aptitude-concepts-of-marked-price-and-successive-discounts-profit-loss-without-stupid-formulas.htmlhttp://mrunal.org/2012/05/aptitude-partnership-and-profit-sharing.htmlhttp://mrunal.org/2013/01/aptitude-alligation-interest-rates-profit-loss-average-wages-wine-water-concept.htmlhttp://mrunal.org/2012/03/aptitude-alligationsmixturesalloys.htmlhttp://mrunal.org/2013/02/aptitude-averages-more-than-two-elements-added-removed-shortcut-technique-explained.htmlhttp://mrunal.org/2013/02/aptitude-averages-entry-removal-of-1-element-increase-decrease-in-average-shortcut-method-explained.html


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problems,

Then solve maximum sums at home.

Sample Questions from previous IBPS PO Exams:

1. An article was purchased for Rs.78.350/. Its price was marked up by 30%. It was sold at a discount of 20% on the

marked up price. What was the profit percent on the cost price?

2. What is the difference between the simple and compound interest on Rs. 7,300/- at the rate of 6% per annum in 2

years?

3. The simple interest accrued on an amount of Rs. 22,500 at the end of four years is Rs. 10,800. What would be the

compound interest accrued on the same amount at the same rate of interest at the end of two years?

4. Ramolas monthly income is three times Ravinas monthly income, Ravinas monthly income is fifteen percent

more that Ruchikas monthly income. Ruchikas monthly income is Rs. 32,000. What is Ramolas annual income?

#9: Number theory and Remainders

topic approach

Divisibil ity, remainders

LCM and HCF

Unknown numbers from given

conditions

Fractions-comparisons.

This arti cle explaining the concept of HCF, LCM click me

NCERT Class 7 Chap 2, 9 (fraction)

NCERT Class 10 Chap 1 (divisibil ity)

Finally practice sums from your Quantitative aptitude book /

Papersets.

Sample Questions from previous papers

1. When X is subtracted from the numbers 9, 15 and 27, the remainders are in continued proportion. What is the value

of X?

2. The product of three consecutive even numbers is 4032. The product of the first and the third number is 252. What

is five times the second number?

3. Sum of three consecutive numbers is 2262. What is 41% of the highest number?

#10: Geometry (Area-Volume-Perimeter)

1. Basics from

a. NCERT Class 8 Chap 3, 11.

b. NCERT Class 9 Chap 9, 12, 13.

c. NCERT Class 10 Chap 13

2. Then maximum practice @home.

Sample Questions from IBPS-2012

I. The area of a square is 1444 square meters. The breadth of a rectangle is 1/4th the side of the square and the length

of the rectangle is thrice the breadth. What is the difference between the area of the square and the area of the

rectangle?

II. The premises of a bank are to be renovated. The renovation is in terms of flooring. Certain areas are to be floored

either with marble or wood. All rooms/halls and pantry are rectangular. The area to be renovated comprises of a hall

for customer transaction measuring 23 m by 29 m, branch managers room measuring 13 m by 17 m, a pantry

measuring 14 m by 13 m, a record keeping cum server room measuring 21rn by 13 m and locker area measuring 29

m by 21 m. The total area of the bank is 2000 square meters. The cost of wooden flooring is t 170/- per squaremeter and the cost of marble flooring is Rs.190/- per square meter. The locker area, record keeping cum server

room and pantry are to be floored with marble. The branch managers room and the hall for customer transaction are

to be floored with wood. No other area is to be renovated in terms of flooring.

1. What is the respective ratio of the total cost of wooden flooring to the total cost of marble flooring?

2. If the four walls and ceiling of the branch managers room (The height of the room is 12 meters) are to be

painted at the cost of 1901- per square meter, how much will be the total cost of renovation of the branch

managers room including the cost of flooring?

3. If the remaining area of the bank is to be carpeted at the rate of Rs. 110/- per square meter, how much will be

the increment in the total cost of renovation of bank premises?

4. What is the percentage area of the bank that is not to be renovated?

5. What is the total cost of renovation of the hall for customer transaction and the locker area?
http://mrunal.org/2013/03/aptitude-lcm-hcf-gcd-basic-concept-calculation-applications-explained.htmlhttp://mrunal.org/2013/01/aptitude-product-consistency-shortcuts-ssc-ibps-csat-cat.html


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#11: Time-Speed-Work-Distance

All of them can be solved with our universal STD formula. See following articles to learn the concept

1. [Aptitude] Trains, Platforms TSD (Time,Speed,Distance) made easy

2. [Aptitude] TSD: Average Speed made easy without Formulas

3. [Aptitude] P ipes and Cistern problem: 3 pipes, 2 work together

4. [Aptitude] Time n Work : P and Q start together but P leaves after some days

5. [Aptitude] Boats and Streams made-easy using our STD-Table Method

6. [Aptitude] TnW: A is thrice as good as workman as B

7. [Aptitude] Time n Work: 4 men and 6 women can complete a work in 8 Days then8. [Aptitude] Time n Work :Daily Wages and Share in Payment

Sample Questions from previous IBPS exams

1. A and B together can complete a task in 20 days. B and C together can complete the same task in 30 days. A and C

together can complete the same task in 40 days. What is the respective ratio of the number of days taken by A when

completing the same task alone to the number of days taken by C when completing the same task alone?

AP-GP

Although these questions were not seen in recent exams but if youve time and mood left, prepare the basics from NCERT

and practice a few MCQs. You might get lucky for question or two!

Arithmetic Progression NCERT Class 10 Chap 5.

Geometric Progression NCERT class 11 chapter 9.

For more on IBPS PO/CWE related articles and study plans, visit Mrunal.org/IBPS

URL to article: http://mrunal.org/2013/09/studyplan-ibps-cwe-pomt-quantitative-aptitude-maths-data-

interpretation-di-speed-maths.html

Posted By Mrunal On 06/09/2013 @ 01:23 In the category IBPS
http://mrunal.org/ibpshttp://mrunal.org/2012/05/aptitude-time-n-work-daily-wages-and.htmlhttp://mrunal.org/2012/05/aptitude-time-n-work-4-men-and-6-women.htmlhttp://mrunal.org/2012/05/aptitude-tnw-is-thrice-as-good-as.htmlhttp://mrunal.org/2012/04/aptitude-boats-and-streams-made-easy.htmlhttp://mrunal.org/2012/04/aptitude-time-n-work-p-and-q-start.htmlhttp://mrunal.org/2012/04/aptitude-pipes-and-cistern-problem-3.htmlhttp://mrunal.org/2012/05/aptitude-tsd-average-speed-made-easy.htmlhttp://mrunal.org/2012/03/aptitude-trains-platforms-tsd.html

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