1.

If A and B are any two events, then the probability that exactly one of them occur is:

Answer»

<P>`P(AcupbarB)+P(barAcupB)`
`P(AcapbarB)+P(barAcapB)`
`P(A)+P(B)-2P(ACAPB)`
`P(A)+P(B)+2P(AcapB)`

ANSWER :B


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