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#1 2017-06-21 09:15:49

samuel.bradley.99
Member
Registered: 2016-03-16
Posts: 50

Two friends - Probability

Alice and Bob are sitting at the beach and each of them has 5 stones in front of him. They start tossing a fair coin and each time they get a head, they throw one of their stones in the sea, otherwise they do nothing. What is the probability that both friends have thrown all their stones after the same number of tosses?

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