Sunday, 9 June 2019

Probability - die - The number of throws until a $5$ and a $6$ have been obtained.

An unbiased die is thrown repeatedly until a 5 and a 6 have been obtained. the random variable M denotes the number of throws required. For example, for the sequence of results 6,3,2,3,6,6,5, the value of M is 7. Calculate P(M=r).

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