Question

How do you evaluate `(10!)/(4!)`?

Answer 1

`(10!)/(4!) = 151,200`

Explanation:

By hand you need to know that `10! = 10 * 9 * 8 * 7 * 6 * 5 * 4!`

So `10! = (10 * 9 * 8 * 7 * 6 * 5 * cancel(4!))/(cancel(4!)) = 10 * 9 * 8 * 7 * 6 * 5 = 151,200`

A TI graphing calculator can do factorials:

`10 " MATH > PRB " 4 -: 4 " MATH > PRB " 4` ENTER

`10! "/" 4! " " 151,200`