by pnruzihanabdullah smk puteri, seremban › 2010 › 04 › prob1.pdfsmk puteri, seremban. a die...
TRANSCRIPT
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BYBY
Pn Ruzihan Abdullah
SMK Puteri, Seremban
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A die is rolled on a table
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Answer
S: {1,2,3,4,5,6,}S: {1,2,3,4,5,6,}
n(S)=6
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Choosing a day of the week
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Answer
S: {Sunday, S: {Sunday, Monday,Tuesday, Wednesday, Thursday, Friday, Saturday}
n(S)=7
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Probability of event A occurs
= Number of times event A occursNumber of trials
P(A)=n(A)n(S)
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1 6 9 16 24 36Siti puts the above six cards in a box. If Siti puts the above six cards in a box. If Siti picks a card randomly from the box, find the probability of obtaining a) a odd numberb) A number less than 15
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Let S the sample space , S={1,6, 9,16,24,36}
n(S)=6
a) Let K be the event of picking an odd number
K={1,9}K={1,9}
P(K)=n(K)
n(S)
=2
6
= 1
3
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b) Let T be the event of picking a number less than 15
T={1,6,9}
P(T)= n(T)
n(S)n(S)
=3
6
= 1
2
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�The probability of the vowel is chosen from the word is chosen from the word EXAMINATION
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Let S the sample space , S={E,X,A,M,I,N,A,T,I,O,N}
n(S)=11
a) Let V be the event of vowel is choosena) Let V be the event of vowel is choosen
V={E,A,I,A,I,O} n(V)=6
P(V)=n(V)
n(S)
=6
11
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� The Probability of Saleh is going to Penang is 3
55Find the probability that Saleh does not go to Penang.
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P(not going to Penang)= 1- 3
5
= 2
5
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� State the compliment of getting a vowel from the getting a vowel from the word “EXCELLENT”
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Sample Space ={E,X,C,E,L,L,E,N,T}
n(S)=9the vowel ={E,E,E}the vowel ={E,E,E}n(vowel)=3P(vowel)=3
9=13
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P(Not getting the vowel)
= 1-1
33
=2
3