2018 Theme #8
Source:
November 13, 2018
probability
Problem Statement
Crisp All, a basketball player, is dropping dimes and nickels on a number line. Crisp drops a dime on every positive multiple of , and a nickel on every multiple of that is not a multiple of . Crisp then starts at . Every second, he has a chance of jumping from his current location to , and a chance of jumping from his current location to . When Crisp jumps on either a dime or a nickel, he stops jumping. What is the probability that Crisp stops on a dime?