Example: barber
Genie Genuine
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Level 1/Level 2 GCSE (9–1) Thursday 11 June 2020
www.mathsgenie.co.ukAll the other old style £1 coins are genuine. Shreya has two old style £1 coins. She does not know if each coin is genuine or fake. (a) Complete the probability tree diagram. fake genuine..... fake genuine..... First coin Second coin 0.03 fake genuine..... (2) (b) Show that the probability that both of Shreya’s coins are genuine is 0.9409 (1)