Suppoe you win $1 if a unfair coin how a head and loe $1 if it how a
tail. Denote the outcome on to t by t. For each coin to, there i 60% probability
to get a head, and 40% probability to get a tail. For each independent coin to t, your
average winning on the lat three toe (wt) are

1/2t 1/4t−1 1/4t−2