A probability problem by Paola Ramírez
Probability
Level
2
John and Charlie play a game with a coin. John will roll a dice and will give to Charlie a coin every time the dice does not mark two. They want to have the same advantage, so how many coins will have to pay Charlie when the dice mark 2?
The answer is 5.
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1 solution
As the die is fair, when it is rolled 6 times, each number is expected to appear once, therefore, after 6 throws, John will have paid to Charlie 5 coins and the die will have marked once "2", then, in order to have the same advantage, Charlie has to pay 5 coins every time the die marks 2.