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## Answers

__(n+2)(n+1)n!=2550*n!__

__(n+2)(n+1)=2550__

__(n+2)(n+1)=50*51__

__soo__

__n=49__(n+2)(n+1)=2550

n^2+2n+n+2

=n^2+3n-2548=0

so it can be either 49 or -51

as n can't be negative so n

=49

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(n+2)(n+1)=2550

n^2+2n+n+2

=n^2+3n-2548=0

so it can be either 49 or -51

as n can't be negative so n

=49