1.

If `P(A cap B)=1//3, P(A cup B)=5//6 " and " P(A)=1//2`, then which one of the following is correct ?A. A and B are independent eventsB. A and B are mutually exclusive eventsC. P(A)=P(B)D. `P(A) lt P(B)`

Answer» Correct Answer - A
We have,
`P(A cup B)=P(A)+P(B)-P(A cap B)`
`implies (5)/(6)=(1)/(2)+P(B)-(1)/(3) implies P(B)=(2)/(3)`
Clearly, `P(A cap B)=P(A)P(B)`
So, A and B are independent events.


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