What do the symbal ! stand for in math equations?

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! means factorial eg
8! = 8*7*6*5*4*3*2*1...Show more

eHow website says that the symbol ! is an exclamation point that follows a number or variable. For example to solve it you multiply every positive integer that leads up to it:
2! = 1 x 2 = 2 or 7! = 1 x 2 x 3 x 4 x 5 x 6 x 7 = 5,040.
Why is it needed? It is used when you have a group of people sharing a bunch of things. If there are 7 things, the first person has seven choices to pick from, the second person will have one less choice or six things, and the third person will have five things and so on. The answer 5,040 is the total number of ways for 7 people to share seven things.

In case you were wondering, If you have less than seven people, lets say you have 3 people, then you just have 5 x 6 x 7 = 210 ways. And if you have more than 7 things, lets say you have 11 things, it would be 11 x 10 x 9 x 8 x 7 x 6 x 5. That's part of 11! (eleven factorial)....Show more

It means "factorial" and is used this way:

2! is read "2 factorial" and is computed as 2*1=2
3! is computed as 3*2*1=6
4! means 4*3*2*1=24

Get it? So for example, 24! means:
24*23*22*21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1=A REALLY BIG NUMBER! :)

So your problem:

8! X 3^8 X 12! X 2^10 is really

(8*7*6*5*4*3*2*1) X (3*3*3) X (12*11*10*9*8*7*6*5*4*3*2*1) X (2*2*2*2*2*2*2*2*2*2)

And I'll leave it to you to multiply out the final answer.

Have a good day!...Show more

n! means "n factorial". It's given by the formula:

n! = 1 x 2 x 3 x 4 x ... x (n - 1) x n

Also, 0! is defined to be 1. This property is commonly used:

n! = n x (n - 1)!

It's used often in enumeration. For example, if you have 10 things, the number of ways you can arrange them into a line would be 10!...Show more

its factorial. if its 8!, it is 8*7*6*5*4*3*2*1, or 40320.

make it a good day...Show more