1.

यदि `P(A)=0.8, P(B)=0.5` और `P(B/A)=0.4` हो, तो ज्ञात कीजिए- `P(A nn B)`

Answer» यहाँ `P(A)=0.8, P(B)=0.5`,
`P(B/A)=0.4`
`P(B/A)=(P(A nn B))/(P(A))`
`implies 0.4 =(P(A nn B))/0.8`
`implies P(A nn B)=0.4xx0.8=0.32`.


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