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Grinstead-Snell-Probability
· Problem 39
Combinatorics
Mathematics · binomial-distribution
Problem
Prove that the probability of exactly
n
n
n
heads in
2
n
2n
2
n
tosses of a fair coin is given by the product of the odd numbers up to
2
n
−
1
2n-1
2
n
−
1
divided by the product of the even numbers up to
2
n
2n
2
n
.
Related theory
The Binomial Distribution
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