Two events A A\,A and B B\,B are independent, with P(A)=0.5P(A) = 0.5P(A)=0.5 and P(A∪B)=0.65P(A \cup B) = 0.65P(A∪B)=0.65.
a.
Show that P(B)=0.3P(B) = 0.3P(B)=0.3.
[3]
b.
Find P(A∩B′)P(A \cap B')P(A∩B′).
[2]
c.
Find P(A′∩B′)P(A' \cap B')P(A′∩B′).
[1]
Markscheme
2.3 Probability Questions
36 exam-style questions on WJEC A Level Maths 2.3 Probability, covering 2.3.1 Probability and 2.3.2 Probability. Each one has a worked solution and a mark scheme showing where the marks go.