Probability of n tosses of a fair coin


Solve the below:

Q: Let Qn denote the probability that in n tosses of a fair coin no run of 3 consecutive heads appears. Show that:

Qn = ½ Qn-1 + ¼Qn-2 + ⅛Qn-3

Q0 = Q1 = Q2 = 1

Find Q8.

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Basic Statistics: Probability of n tosses of a fair coin
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