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A coin is tossed twice and the four poss...

A coin is tossed twice and the four possible outcomes are assumed to be equally likely. If A is the event, both head and tail have appeared, and B be the event, at most one tail is observed, find `P(A),\ P(B),\ P(A//B)\ a n d\ P(B//A)dot`

A

`2/3 ,1`

B

`1/3,2/3`

C

`1,2/3`

D

none of these

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A
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