( n + 2 ) ! = 60 \times ( n - 1 ) ! – InterviewSolution

InterviewSolution

1.	( n + 2 ) ! = 60 \times ( n - 1 ) !
Answer» (n+2)(n+1)n(n-1)!=60(n-1)!(n+2)(n+1)n=60so n=3

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