MathDB
MBMT Guts #29

Source:

March 29, 2015

Problem Statement

A fair coin is flipped 20152015 times. Estimate the probability that fewer than 10001000 heads are flipped. Express your answer to the nearest thousandth. For example, 0.8000.800, 0.1100.110, and 0.2340.234 are valid responses, but 0.80.8 and 0.23450.2345 are not. An invalid response will receive a score of zero.