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4.1.2 Probability (A-level only)

The event that both AAA and BBB occur is their [     ].

A

P(B∣A)P(B\mid A)P(B∣A) is undefined when P(A)=0\boxed{P(A)=0}P(A)=0​.

B

The event that both AAA and BBB occur is their intersection.

C

0.5×0.30.25=0.6\frac{0.5\times 0.3}{0.25}=0.60.250.5×0.3​=0.6

D

The event after the vertical line.

4.1.2 Probability (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /4.1.2 Probability (A-level only)

Flashcards for WJEC A Level Maths 4.1.2 Probability (A-level only), covering the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4. 20 cards, matched to the WJEC A Level Maths (1300QS) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.