Question

Simplify 15c3 please

Answer 1

455.

Explanation:

Yes. You require the number of combinations of 3 from 15.

15C3

The formula for this is 15! / 12! 3! or you can do itr as follows

15C3 = 15*14*13/3*2*1

= 5*7*13

= 35*13

= 455.