Mathematics (AS & A Level) · May / June 2022 · Paper 51 · Question 6

Janice is playing a computer game. She has to complete level 1 and level 2 to finish the game. She is allowed at most two attempts at any level. • For level 1, the probability that Janice completes it at the first attempt is 0.6. If she fails at her first attempt, the probability that she completes it at the second attempt is 0.3. • If Janice completes level 1, she immediately moves on to level 2. • For level 2, the probability that Janice completes it at the first attempt is 0.4. If she fails at her first attempt, the probability that she completes it at the second attempt is 0.2.

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