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JEE Main 2016 Mathematics question

MathematicsProbabilityJEE Main 2016

If A and B are any two events such that and , then the conditional probability, , where A' denotes the complement of A, is equal to :

Answer: (2)

Solution

By De Morgan's law, , so the conditioning event has probability

P((A B)') = 1 - Missing argument for \frac\frac3{20} = .

For the numerator,

A (A B)' = A (A' B') = (A

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Question ID VK-115583