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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good morning i heard your piece on the radio this morning and you quoted the chances of three children born to the same parents and sharing birthdays. my example is similar in that myself and my brother (two only children) share our birthday with our mother. i was born on her 23rd birthday and my brother was born on her 34th birthday. myself 2 days late and my brother 10 days late. what are the chances of that? regards art
Total votes: 932
Date submitted:Fri, 13 Jan 2012 16:07:46 +0000Coincidence ID:3373