The exclamation mark in maths means factorial, which means you have to multiply the number by all the integers which are less than it, like 4! means 4*3*2*1, which is 24.
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The exclamation point in a math equation symbolizes the factorial function. The factorial of an integer > 0 is the product of that integer and all of the integers between 1 and that integer. For instance 7! is 7 * 6 * 5 * 4 * 3 * 2 * 1, or 5040. The special case of 0! is defined as 1.
The exclamation point is the symbol for the factorial function. For integer values of n, n! = 1*2*3*...*n The factorial is critical for calculating numbers of permutations and combinations.
you can have a question marked followed by an exclamation point.
a decimal point stands for and, but only in math! 20.11 = 20 AND 11 hundredths
You can do this when you are shouting your question.