TCS
Company
1> 1*!+2*2!+3*3!.......2012*2012!=????
Read Solution (Total 2)
-
- nth term can b written as
n*n!=(n+1-1)*n!=(n+1)n!-n!=(n+1)!-n1
thus series becomes
2!-1!+3!-2!+4!-3!+.......+2013!-2012!
all terms will cancel out except -1! and 2013!
result
2013!-1 - 11 years agoHelpfull: Yes(34) No(1)
- 2013!-1... (n+1)!-1
- 11 years agoHelpfull: Yes(7) No(2)
TCS Other Question