Problem of the Week-5: Coin Toss

Suppose you repeatedly toss a (fair) coin until you get two heads in a row. What is the probability that you stop on the 10th toss?

Explain your answer.

Posted: 10/25/04

Submit your answers (by e-mail or hard copy) before 4 pm on 11/05/04 to Noah Aydin.

Mathematics Dept.