Finite Math Examples

${}_{4}C_{6}$

Step 1

Evaluate ${}_{4}C_{6}$ using the formula ${}_{n}C_{r} = \frac{n!}{(n - r)! r!}$ .

$\frac{4!}{(4 - 6)! 6!}$

Step 2

Since $r > n$ , it is impossible to select $6$ items from a total of only $4$ possible items.

$0$