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For any two events A and B in a sample s...

For any two events A and B in a sample space which of the following is incorrect?

A

1) `P((A)/(B)) ge (P(A) +P(B) -1)/(P(B)),P(B) ne 0 ` is always true

B

2) `P(A nn barB) = P(A) - P(A nn B)` does not hold

C

3) `P(A uu B) = 1- P(barA) P(barB)`, if A and B are a disjoint

D

4) None of these

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The correct Answer is:
A
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