If P(A B)= 5 6 , P(A B)= 1 3 and P( not A)= 1 2 , then which one of the following is **not** correct?

NDA 2020 Mathematics question

If , and , then which one of the following is **not** correct?

Answer: (C)

and ; (a) is true. , so A and B

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Question ID VK-029274