📐 Mathematics · Probability (Class 11) · JEE

If A and B are mutually exclusive with P(A) = 0.3 and P(B) = 0.4, then P(A ∪ B) equals:

Answer: 0.7.

Correct answer: B. 0.7

Explanation: For mutually exclusive events P(A ∪ B) = 0.3 + 0.4 = 0.7.

Concept context

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