If 20 people are selected at random, find the probability that at least 2 of them

Algebra
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If 20 people are selected at random, find the probability that at least 2 of them have the same birthday.

A. ≈ 0.31

B. ≈ 0.42

C. ≈ 0.45

D. ≈ 0.41

Jun 4th, 2015

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Jun 4th, 2015

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