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Putnam 1958 February A3

Source: Putnam 1958 February

July 18, 2022
Putnamprobabilityexpected valueexponential

Problem Statement

Real numbers are chosen at random from the interval [0,1].[0,1]. If after choosing the nn-th number the sum of the numbers so chosen first exceeds 11, show that the expected value for nn is ee.
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