📐 Mathematics · Probability (Class 11) · JEE

If A and B are mutually exclusive with P(A) = 0.3 and P(B) = 0.45, then P(A ∪ B) is:

Answer: 0.75.

Correct answer: A. 0.75

Explanation: For mutually exclusive events the probabilities add directly: 0.3 + 0.45 = 0.75.

Concept context

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