Try this ACT math practice question on dealing with algebraic manipulation of factorial expressions..
Which of the following expressions is equivalent to
[1–(n!)2(n+1)!(n−1)!] where n>2 and n!=n(n−1)(n−2)⋯3⋅2⋅1 ?
- n−2n+1
- 1n+1
- 2n2−1
- 1n−1
- nn+1
Online Resource for ACT Math
Leave a Reply