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16-10-2016
Mathematics

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What does the c stand for in this, calculate 7c2?

Respuesta :

16-10-2016

7C2 usually means the number of combinations of 7 different things taken 2 at a time:
[tex]7C2=\frac{7!}{2!5!}=\frac{7\times6}{2}=21[/tex]

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