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If A, B are two events such that P(A')=0...

If A, B are two events such that `P(A')=0.3, P(B)=0.4` and `P(A nn B')=0.5`, then `P(A uu B')` is equal to

A

`0.5`

B

`0.8`

C

1

D

`0.1`

Text Solution

Verified by Experts

The correct Answer is:
B
Here, `P(B')=1-0.4=0.6`
and `P(A)=1-0.3=0.7`
`therefore P(A uu B')=P(A)+P(B')-P(A nn B')`
`= 0.7+0.6-0.5 = 0.8`
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