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

• 1(1!)=2!-1!
  2(2!)=3!-2!
  :
  :
  :
  2012(2012!)=2013!-2012!
  So adding all the terms we get the sum as (2013!-1!).
• 11 years agoHelpfull: Yes(14) No(0)
• 1(1!)=2!-1
  1(1!)+2(2!)=3!-1
  .
  .
  .
  1(1!)+2(2!)+......2012(2012!)=2013!-1
• 11 years agoHelpfull: Yes(2) No(0)
• 1(1!)=1
  1(1!)+2(2!)=(3!-1)
  .
  .
  .
  2012(2012!)=2013!-1
• 11 years agoHelpfull: Yes(0) No(0)