A-Level Maths Edexcel (9MA0)

Understand and use conditional probability, including the use of tree diagrams, Venn diagrams, two-way tables.

Understand and use the conditional probability formula:

$P(A|B) = \dfrac{P(A∩B)}{P(B)}$

Understanding and use of

• $P(A') = 1 - P(A)$,
• $P(A∪B) = P(A) + P(B) - P(A∩B)$,
• $P(A∩B) = P(A)P(B|A)$.