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MathNet 2016-part-07 — 182 problems (EN–VI) Question 134

Math Olympiad Vault · MathNet 2016-part-07 — 182 problems (EN–VI)

Question 134

Katherine has a piece of string that is $2016$ millimeters long. She cuts the string at a location chosen uniformly at random, and takes the left half. She continues this process until the remaining string is less than one millimeter long. What is the expected number of cuts that she makes?