Kidding …

The symbol “!” is the “factorial” … when you see it after a number it means that you need to take the product from 1 to that number. In other words, 5! is read “five factorial” and in a problem you multiply:

1 x 2 x 3 x 4 x 5 = 120

3! is:

1 x 2 x 3 = 6

Some calculators have the factorial on a key and will do the calculation automatically.

Hope that helps.

4! = 4 x 3 x 2 x 1 = 24

10! = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 3628800

etc.

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

In mathematics, the factorial of a non-negative integer n is the product of all positive integers less than or equal to n.

So basically you take whatever number it is and do what i did with 5! and 6! and if its in a equation solve it first example:

5!*6x

it would be (1*2*3*4*5) * 6x

Do the math and its 120 * 6x then you would solve the equation

Hope this helps!

4! = 4*3*2*1=24

9! = 9*8*7*6*5*4*3*2*1

It is used in statistics and probabilities

So, if you see 5!, it really is 5x4x3x2x1

so 3! is 3x2x1

and 6! is 6x5x4x3x2x1