hard · Gre Quant

For an integer n with 2 ≤ n ≤ 12, consider the quantity n! + (n-1)!. Indicate ALL values of n for which n! + (n-1)! is a perfect square. Options: A) n = 3 B) n = 4 C) n = 5 D) n = 6 E) n = 7 F) n = 9 G) n = 11

1. N = 3
2. N = 4
3. N = 5
4. N = 6
5. N = 7
6. N = 9
7. N = 11

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