SOLUTION: Evaluate: 6^C4

Question 423349: Evaluate: 6^C4
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
If you mean ₆C₄ then keep reading. If not, then please re-post you question.

_nC_r =
So
₆C₄ =
which simplifies to
₆C₄ =
The exclamation points indicate factorials. A factorial of a (non-negative) number is the product of all the integers from 1 to the number. So
6! means 1*2*3*4*5*6
4! means 1*2*3*4
and
2! means 1*2
(P.S. 1! and 0! are both defined to be a 1.)

So
₆C₄ =
A lot of these factors cancel so we don't have to do very much multiplying to simplify:
₆C₄ =
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