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If A and B are two events euch that P(A)...

If A and B are two events euch that `P(A) != 0 and P(B//A)=1` then

A

`AsubB` but `A!=B`

B

`BsubA`

C

`B=phi`

D

`A=phi`

Text Solution

Verified by Experts

The correct Answer is:
A
(a)
Given `P(A)!=0`
and `P(B/A)=1impliesP(B/A)=(P(AnnB))/(P(A))=1`
`impliesP(AnnB)=P(A)impliesAnnB=AimpliesAsubB`
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