turkey-yks 2016 Q4

turkey-yks · Other · lys1-math Permutations & Arrangements Factorial and Combinatorial Expression Simplification

$$\frac { ( n + 1 ) ! + ( n - 1 ) ! } { n ^ { 3 } - 1 } = 24$$
Given this equality, what is n?
A) 3
B) 5
C) 6
D) 8
E) 9

$$\frac { ( n + 1 ) ! + ( n - 1 ) ! } { n ^ { 3 } - 1 } = 24$$

Given this equality, what is n?\\
A) 3\\
B) 5\\
C) 6\\
D) 8\\
E) 9