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19-02-2017
Mathematics

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1. A coin is tossed until a tail appears. What is the probability that a tail will appear in at most 5 tries

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realcookie realcookie

19-02-2017

50% chance i hope this helps bye bye

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19-02-2017

You have have to add up probabilities of it appearing on 1,2,3,4,5 tries. So t=1/2, ht=1/4,hht=1/8, hhht=1/16,hhhht=1/32. You add up all those probabilities and that is the pr(X less than equal to 5) for x=1,...5

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