find the remainder when-

http://latex.codecogs.com/gif.latex?...10}(n^{2}+n)n!

is divided by 10.

No idea. (Thinking)

i just know the sum of n.n!=(n+1)!-1

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- May 5th 2009, 08:15 PMadhyetafind the remainder
find the remainder when-

http://latex.codecogs.com/gif.latex?...10}(n^{2}+n)n!

is divided by 10.

No idea. (Thinking)

i just know the sum of n.n!=(n+1)!-1 - May 5th 2009, 08:25 PMTheEmptySet
- May 5th 2009, 08:43 PMadhyeta