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12. Probability
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Q8 of 54 Page 315

If A and B are mutually exclusive events and S is the sample space such that

and S = A ∪ B, then P (A) =

Since the event are mutually exclusive the intersection is 0.


Thus P(AUB) = P(A)+P(B)


⇒ P(AUB) = P(A)+3.P(A)


⇒ 1 = 4.P(A)


P(A) =

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If A and B are two events such that

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Questions · 54
12. Probability
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