📐 Mathematics · Probability (Class 11) · JEE

If P(A) = 0.4, P(B) = 0.5 and P(A ∩ B) = 0.2, then P(A ∪ B) is:

Answer: 0.7.

Correct answer: A. 0.7

Explanation: P(A ∪ B) = 0.4 + 0.5 − 0.2 = 0.7.

Concept context

Random experiments, sample space, events, and the axiomatic approach to probability