Question

18!/(18-4)!4!

Answer 1

3060

Answer 2

18c4

Answer 3

\[\frac{18!}{(18-4)!4!}\]


\[\frac{18!}{14!4!}\]


\[\frac{18*17*16*15*14!}{14!4!}\]


\[\frac{18*17*16*15}{4!}\]


\[\frac{18*17*16*15}{4*3*2*1}\]


\[\frac{73440}{24}\]


\[3060\]


So \[\frac{18!}{(18-4)!4!}=3060\]