Question 227877
106! / 104! is the same as 106*105*104! / 104!.


The 104! in the numerator and the denominator cancels out and you are left with:


106 * 105 = 11130


Take smaller numbers to prove this is good.


Take 5! / 3!


Using your calculator, you would get 20


Doing 5*4*3!/3! you get 5*4 = 20


Same answer.