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In group of 100 what is the expected number of pairs of peole who have the same birthday

In group of 100 what is the expected number of pairs of peole who have the same birthday
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In group of 100 what is the expected number of pairs of peole who have the same birthday

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User Bob Flannigon
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5 votes
1 pair is the correct answer according to the Birthday problem method. :)
answered
User Marty Trenouth
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2 votes
50. That is the expected number. Because 100 divided by 2 equals 50. 
answered
User Justabuzz
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