The events A and B are such that P(A)=15\displaystyle P(A) = \frac{1}{5}P(A)=51, P(A∩B)=120\displaystyle P(A \cap B) = \frac{1}{20}P(A∩B)=201, P(B)=310\displaystyle P(B) = \frac{3}{10}P(B)=103. Find
P(A∪B)P(A \cup B)P(A∪B)
330 exam-style questions on Edexcel A Level Maths Conditional Probability, covering 2.1 Set Notation, 2.2 Conditional Probability, 2.3 Conditional Probabilities in Venn Diagrams, 2.4 Probability Formulae, and 2.5 Tree Diagrams. Each one has a worked solution and a mark scheme showing where the marks go.