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The factorial of a non negative integer‚n denoted by n!, is the product of all positive integers less than or equal to n. For example 5! Is 5*4*3*2*1=120. The sum of the series 1(1!)+2(2!)+3(3!)+....+2012(2012!) is
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- 1(1!)=1 --->2!-1
1(1!)+2(2!)=1+4=5 --->3!-1
1(1!)+2(2!)+3(3!)=1+4+18=23--->4!-1
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-similarly
1(1!)+2(2!)+3(3!)+........+2012(2012!)=2013!-1 - 11 years agoHelpfull: Yes(32) No(1)
- 2013!-1 is the answer
- 11 years agoHelpfull: Yes(1) No(0)
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