Birthday coincidence

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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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My mother-in-law has two children who share the same birth date but four years apart (20th November) and a neice, a granddaughter and three great-grandchildren who share the same birth date (22nd February). In fact, two of the great-grandchildren are siblings born two years apart and the other great-grandchild was actually born on the exact same day as one of the siblings!
Total votes: 754
Date submitted:Fri, 13 Jan 2012 23:18:47 +0000Coincidence ID:3422