Question

Evaluate each expression6! =3! • 2=31

Answer 1

$6!=6*5*4*3*2*1=720$

6!=720.

2.

$3!*2!=(3*2*1)*(2*1)=6*2=12$

3!*2!=12.

Mathematical symbol !.

the symbol is known as a factorial and always uses the following structure until it reaches 1.

Explanation:

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

Where n-(n-1)=n-n+1=1.

When n=6:

$\begin{gathered} 6!=6*(6-1)*(6-2)*(6-3)*(6-4)*(6-5) \\ 6!=6*5*4*3*2*1 \end{gathered}$