Question

two events a and b have the following probabilities p(a)=0.5 and p(b)=0.6 and p(a'nb')=0.25 . find the value of P(a∪b).

Answer 1

Answer:

Correct option is

A

0.39

P(A∪B)=P(A)+P(B)−P(A∩B)

⇒P(A∪B)=0.25+0.50−0.14=0.61

P(neither A nor B)=P(Aˉ∩Bˉ)=1−P(A∪B)=1−0.61=0.39

Option A is correct.

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