i tried to make a move but i couldn't think where to start please help

Find the sum: 1(1!)+ 2(2!) + 3(3!) + ... + n (n!)

Define: n! = n(n-1) (n-2)(n-3) ... (3)(2)(1)

thanks

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- Sep 20th 2010, 08:55 PM #1
## 1(1!)+ 2(2!) + 3(3!) + ... + n (n!)

i tried to make a move but i couldn't think where to start please help

Find the sum: 1(1!)+ 2(2!) + 3(3!) + ... + n (n!)

Define: n! = n(n-1) (n-2)(n-3) ... (3)(2)(1)

thanks

- Sep 20th 2010, 09:31 PM #2

- Sep 20th 2010, 09:53 PM #3

- Sep 21st 2010, 01:25 AM #4

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