Solution
= Solution
The word $HT$ has no proper self-overlap, so its mean waiting time is the reciprocal of its probability: $1/[p(1-p)]$. This also follows from two first-step equations.
= Solution
The word $HT$ has no proper self-overlap, so its mean waiting time is the reciprocal of its probability: $1/[p(1-p)]$. This also follows from two first-step equations.