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31. Probability
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Q6 of 249 Page 31

Compute P (A/B), if P (B) = 0.5 and P (A∩B) = 0.32

Given: P(B) = 0.5, P(A∩B) = 0.32


To find: P(A|B)


We know that,



By substituting the values we get




is the required value


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4

A coin is tossed three times, if head occurs on first two tosses, find the probability of getting head on third toss.

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A die is thrown three times, find the probability that 4 appears on the third toss if it is given that 6 and 5 appear respectively on first two tosses.

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If P (A) = 0.4, P (B) = 0.3 and P(B/A)=0.5, find P(A∩B) and P(A/B).

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If A and B are two events such that and , find P (A/B) and P (B/A).

Questions · 249
31. Probability
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