If P(A) = 0.6, P(B) = 0.7, and P(A ∪ B) = 0.9, then P(A ∩ B) is: MCQ with Answer and Explanation

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If P(A) = 0.6, P(B) = 0.7, and P(A ∪ B) = 0.9, then P(A ∩ B) is:

A. 0.2

B. 0.3

C. 0.5

D. 0.4

Answer: Option D

Solution (By JKExamLibrary)

By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) → 0.9 = 0.6 + 0.7 - P(A∩B) → P(A∩B) = 1.3 - 0.9 = 0.4.

This question belongs to: Accountancy and Statistics Statistics

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