How do you simplify #5!#?

1 Answer
Apr 25, 2018

#5 ! =120#

Explanation:

In general,

#n ! =(n)(n-1)(n-2)*...*(3)(2)(1)#

That is, when given a factorial, to determine its value, we simply multiply by every integer below it until we get to #1.#

So,

#5 ! =5*4*3*2*1#

#=20*3*2*1#

#=60*2*1#

#=120*1=120#