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Probability - 2 || Quantitative Aptitude || CAT 2021 || 15 June

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Question 1

If A and B are two events then the value of P(A/B)+P(A'/B) is ____

Question 2

Let X and Y be two events such that P(X/Y)=0.5, P(Y/X)=

and P(X∩Y)=

, then the value of P(X’∩Y’) is ____

Question 3

If two events A and B are such that P(A’)=0.3,P(B)=0.5 and P(A∩B)=0.3 then P(B/A∪B’) is equal to__

Question 4

Dice is thrown three times and the sum of the thrown numbers is 15. What is the probability that 4 appears in first throw?

Question 5

A coin is tossed again and again. If tail appears on first three tosses, then the chance the chance that head appears on fourth toss is

Question 6

Probability of guessing correctly atleast 7 out of 10 answers in a "True" or "False" test is = _________

Question 7

For a Probability to be Mutually exclusive which of the following is a necessary condition

Question 8

A number of 4 different digits is formed by using 1, 2, 3, 4, 5, 6, 7. Find the probability that it is divisible by 5

Question 9

If 12 persons are seated at round table, what is the probability that two particular persons sit together?

Question 10

An urn contains 5 balls. Two balls are drawn and are found to be white. What is the probability that all balls are white?

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Jun 15CAT & MBA