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laiz [17]
3 years ago
8

What does it mean when there are variables on top of each other in parentheses in statistics?

Mathematics
1 answer:
Ilya [14]3 years ago
4 0
It's a combination:
\left(  {{n} \atop {k}}\right)\equiv C(n,k)=\dfrac{n!}{(n-k)!k!}
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