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11! Factorial of 11

Value of 11! i.e, Factorial of 11 =
39916800



In general, the factorial of a number N = N*(N-1)*(N-2)....1
Factorial of a non-negative integer n is the product of all positive integers less than or equal to n. Factorials are commonly encountered in permutations, combinations, number theory and series expansions of trigonometric and other functions (Taylor series).

Number of trailing zeros in 11! = 2
To understand factorials, you might find it useful to read the Factorial tutorial over here.
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