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If a dice is thrown until the occurrence of rth ace, what is the probability that this event occurs on nth throw?

If a dice is thrown until the occurrence of rth ace, what is the probability that this event occurs on nth throw?
 

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
5 years ago
((5/6)^(n-r))((1/6)^(r))

5/6 is the probability for no chanceof an ace
1/6 is chance of an ace

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