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The probablities of events , AnnB, A, B ...

The probablities of events , `AnnB`, `A`, `B` and `AuuB` are respectively in `A.P.` with second term equal to the common difference. Therefore `A` and `B` are

A

mutually exclusive

B

independent

C

such that one of them must occur

D

such that one is twice as likely as the order

Text Solution

Verified by Experts

The correct Answer is:
A, D
`(a,d)` `P(AnnB)=a`, `P(A)=a+d`, `P(B)=a+2d`, and `P(AuuB)=a+3d` also `a+d=d`
`implies a=0`
`implies P(AnnB)=0`, `P(A)=d`, `P(B)=2d`
an `P(AuuB)=3d`
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