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If P(AuuB)=0.8 and P(AnnB)=0.3 ,then P(A...

If `P(AuuB)=0.8` and `P(AnnB)=0.3` ,then `P(A)+P(B)=`

A

a) `0.3`

B

b) `0.5`

C

c) `0.7`

D

d) `0.11`

Text Solution

Verified by Experts

The correct Answer is:
d) `0.11`
We know,

`P(AuuB)=P(A)+P(B)-P(AnnB)`

`0.8=P(A)+P(B)-0.3`

`P(A)+P(B)=0.8+0.3`

`P(A)+P(B)=0.11`

Hence, correct option is d)
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