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The probability that atleast one of the events A and B occurs is 0.6 If A and B occur simulataneously with probability 0.2, then `Poverset(-)((A))+Poverset(-)((B))` is equal to

A

0.4

B

0.8

C

1.2

D

1.4

Text Solution

Verified by Experts

The correct Answer is:
C
Given , `P(A uu B)=0.6,P(A nn B)=0.2`
`:. P(barA)+P(barB)=[1-P(A)]+[1-P(B)]`
`=2-[P(A)+P(B)]`
`=2-[P(A uu B)+P(A nn B)]`
`=-[0.6+0.2]=1.2`
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