A-level Maths · Probability

Conditional probability

Use P(A | B) = P(A ∩ B) / P(B) with probabilities or a two-way table, or independent events.

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Question 1

Events AA and BB are independent, with P(A)=0.6P(A) = 0.6 and P(B)=0.1P(B) = 0.1. Find P(A∪B)P(A \cup B). Give your answer as an exact decimal or fraction.

You can type 4.53, 3.2e-5, 3.2 × 10^-5 or 7/3.

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