birthday coincidences

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understandinguncertainty.org was produced by the Winton programme for the public understanding of risk based in the Statistical Laboratory in the University of Cambridge. The aim was to help improve the way that uncertainty and risk are discussed in society, and show how probability and statistics can be both useful and entertaining.

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I worked with someone who was born on 29th February. His two brothers, one four years older, one eight years older, were also born on 29th February. He said that their mother's three labours were all spontaneous. </p> <p>29th February is no more unlikely than any other date in a leap year, but four years is not the most common gap between children.
Total votes: 278
Date submitted:Tue, 18 Jun 2013 13:22:18 +0000Coincidence ID:7005