A person stands at the corner marked A of the square
Chapter 0, Problem 7.6(choose chapter or problem)
A person stands at the corner marked A of the square pictured in Exercise 7.4 and tosses a coin. If it lands heads up, the person moves one corner clockwise, to B. If the coin lands tails up, the person moves one corner counterclockwise, to D. This process is then repeated until the person arrives back at A. Let y denote the number of coin tosses. What are possible values of y? Is y discrete or continuous?
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