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whats x! mean?????

Guest May 6, 2015

Best Answer 

 #1
avatar+248 
+5

Means x factorial:

x! = x * (x-1) * (x-2)*....* 2 * 1

Eg:

6! = 6 x 5 x 4 x 3 x 2 x 1 = 720

3! = 3 x 2 x 1 = 6

Special cases and notes:

--> 0! = 1

--> Cant get factorials of a negative number or fractions, must be positive whole numbers

 #1
avatar+248 
+5
Best Answer

Means x factorial:

x! = x * (x-1) * (x-2)*....* 2 * 1

Eg:

6! = 6 x 5 x 4 x 3 x 2 x 1 = 720

3! = 3 x 2 x 1 = 6

Special cases and notes:

--> 0! = 1

--> Cant get factorials of a negative number or fractions, must be positive whole numbers


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