Question #22ea9
1 Answer
Sep 11, 2015
It is just (n+5)!
Explanation:
Rearrange the terms (n+4)(n+5)(n+3)!, as (n+5)(n+4)(n+3)!. This is (n+5)!. This is equivalent to
(n+5)(n+4)(n+3)(n+2)(n+1)n(n-1)(n-2)......432*1.
