Samamarkun, hello
A factorial, in mathematics, is the product of all positive integers less than or equal to a given positive integer and denoted by that integer and an exclamation point.
Since "2n" is always greater than "n", the numerator in your question spillways be less than the denominator in your question and therefore the result will always be a fraction less than 12 for any positive integer of n. There is no value of n for which the result would be 12.
