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A coin is tossed independently and repeatedly with the probability of heads equal to P. a) What is the probability of only heads in the

A coin is tossed independently and repeatedly with the probability of heads equal to P.

a) What is the probability of only heads in the first n tosses?

b) What is the probability of obtaining the first tail at the nth toss?

c) What is the expected number of tosses required to obtain the first tail?

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