Let A, B, C be three events in a probability space. Suppose that P(A)=0.5, P(B)=0.3, P(C)=0.2, P(A∩B)=0.15,P(A∩C)=0.1 and P(B∩C)=0.06 The maximum possible value of P(A′∩B′∩C′) is,
A
0.31
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B
0.25
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C
0
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D
0.26
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Solution
The correct option is C0.31
P(AUBUC)=P(A) + P(B) + P(C)
− P(A ∩ B) − P(A ∩ C) − P(B ∩ C)
+ P(A ∩ B ∩ C)