The exclaimation sign in maths means FACTORIAL.
For Example:
7! means 1x2x3x4x5x6x7=5040
same goes with the other non zero positives.
In maths, 0! has been assumed to be ONE.
An equation is a statement, and is never 'equal to' a number. Here are a few equations that all have the solution [x = 23] : x + 3 = 26 x - 7 = 16 5x + 7 = x + 99 x2 - 26x + 69 = 0 x (26 - x) = 69
An exclamation point after a number is the factorial function; meaning you should multiply all numbers up to the specified number.
Example: 4! = 1 x 2 x 3 x 4 = 24.
0! is defined as 1.
If you mean these quotation marks " when written after a number then they stand for inches, if you mean this type of mark ' then that means feet. If you mean something else then I'm sorry I can't...