2012 AMC 12B Problem 14
Bernardo and Silvia play the following game. An integer between and inclusive is selected and given to Bernardo. Whenever Bernardo receives a number, he doubles it and passes the result to Silvia. Whenever Silvia receives a number, she adds to it and passes the result to Bernardo. The winner is the last person who produces a number less than . Let be the smallest initial number that results in a win for Bernardo. What is the sum of the digits of ?
Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.
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Problem Tags: Counting and probability
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