The exclamation mark indicates the operation called "factorial".
'Factorial' is an operation carried out on a whole number. It means: The product
of this whole number with every whole number less that this one, down to ' 1 '.
Examples:
3-factorial = 3 ! = 3 x 2 x 1 = 6
5 ! = 5 x 4 x 3 x 2 x 1 = 120
6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
(5 !) / (3 !) = (5 x 4 x 3 x 2 x 1) / (3 x 2 x 1) = (5 x 4) = 20
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An exclamation mark after a number is the symbol for the factorial function.
It is called factorial, and means to multiply all the numbers up to the specified integer. For example, 5! (read: 5 factorial) is equal to 1 x 2 x 3 x 4 x 5 = 120. This special operation is often used in combinatorics, statistics, probability. it also appears in calculus.
Not always - it depends on the context. There would be an exclamation point if it was being shouted or if it was being said in an exclamatory manner.
The symbols on a calculator represent different mathematical operations. For example, the "+" symbol is used for addition, the "-" symbol for subtraction, the "x" symbol for multiplication, and the "/" symbol for division. Other symbols like "^" represent exponentiation, "√" for square root, and "π" for the mathematical constant pi. Understanding these symbols is crucial for performing accurate calculations on a calculator.
An exclamation mark stands for factorial. For instance, if the number is 7!, then that would be 7x6x5x4x3x2x1. =================================================== Factorial means you multiply the integer written by every integer below it until you reach 1. Oddly enough, 0! = 1. There is also a 'factorial' function for non-integral values, called the Gamma function.