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machtangrizky
machtangrizky machtangrizky
  • 20-07-2016
  • Mathematics
Answered

Evaluate 5C2 (nCR).


A.) 10

B.) 20

C.) 60

Verified Answer :

meerkat18
meerkat18 meerkat18
  • 20-07-2016

We may directly use our calculator to solve for the combination, 5C2 = 10. Another option is to use the equation for the combination that is,
                                 nCr = n! / ((n - r)!r!))
Substituting the known values,
                              5C2 = 5! / ((5 - 2)!2!))  = 10
Thus, the answer is letter A.

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