Question

What is the value of the expression
4!(7 – 4)!
i need help i dont understand this problem..

A.

144











B.

5040











C.

120,384











D.

479,001,600

Answer 1

First, note that ! means factorial. That means 2! = 2 x 1. 3! = 3 x 2 x 1. This wants you to find 4! and multiply that by (7 - 4) factorial. We can write it like this:\[(4 \times 3 \times 2 \times 1)(7 -4)!\]
We can simplify this to:
\[24(3)!\]
That means 24 (3 x 2 x 1), which is 144, the answer is A.

Answer 2

ok great i just got it thanks!