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18-12-2017
Mathematics

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evaluate the expression 10C4

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18-12-2017

The number of combinations of 10 different things taken 4 at a time is:[tex]\frac{10!}{4!(10-4)!}=\frac{10\times9\times8\times7}{4\times3\times2\times1}=210[/tex]
The answer is: 210

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