Mathematics (AS & A Level) · Oct / Nov 2022 · Paper 52 · Question 5

Eric has three coins. One of the coins is fair. The other two coins are each biased so that the probability of obtaining a head on any throw is 1 4, independently of all other throws. Eric throws all three coins at the same time. Events A and B are defined as follows. A: all three coins show the same result B: at least one of the biased coins shows a head 7

Read automatically from the paper; the printed page above is exact.