1.

Evaluate P (AnnB)if 2P(A)=P(B)=5/13and P(A/B)=2/5.

Answer»

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SOLUTION :P(A/B)=2/5`rArr (P(ANNB))/(P(B))=2/5`rArr(P(AnnB))=2/5xxP(B)`
2/5xx5/13=2/13
P(A)=5/26 THUS,`P(AnnB)`
`=`P(A)+P(B)-P(AnnB)`
=5/26+5/13-2/13=11/26


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