4 same digits

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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 discovered that 2 of my friends use the same 4 digit number but in different sequence. Julia: 7211 Kasia: 2117 Alex: 7121 We are all from different countries and are close friends. What are the odds that we would all pick the same 4 digits? Thank you,
Total votes: 360
Date submitted:Tue, 25 Mar 2014 17:01:44 +0000Coincidence ID:7516