What does ! mean in an equation?

ex)
3! + (6*5) - (5+0)= 31
Well 3! has to equal 6

4!= 4*3*2*1

! means factorial

Your a mathematician just another one of my tests.

Do you understand, Bridgett? You just multiply that number through 1. Examples: 8!=8*7*6*5*4*3*2*1, 3!=3*2*1, 12!=12*11*10*9*8*7*6*5*4*3*2*1.

3!=6

3!+(6*5)-(5+0)= 31

6+30-5=36-5=31

The exclamation mark symbol, "!", in an equation represents a mathematical operation called a factorial.

In mathematics, the factorial of a non-negative integer n, denoted as n!, is the product of all positive integers from 1 to n. For example, 3! (pronounced as "3 factorial") is calculated as 3 x 2 x 1, which equals 6.

In the given equation, "3!" represents the factorial of 3. So, to calculate 3!, we multiply 3 by 2, and then multiply the result by 1.

To understand the equation:

3! + (6*5) - (5+0) = 31

First, calculate 3!:

3! = 3 x 2 x 1 = 6

Now the equation becomes:

6 + (6*5) - (5+0) = 31

Next, calculate other parts of the equation:

6*5 = 30
5+0 = 5

Substituting the values back into the equation:

6 + 30 - 5 = 31

Finally, add and subtract the remaining values:

36 - 5 = 31

Therefore, the equation holds true and its solution is 31.