I have been asked to prove that (1*1!)+(2*2!)+(3*3!)+ ... + (n*n!) is always = to (n+1)!-1 for all positive intergers using proof by induction. If anyone could help me on this one i would be most thankfull

Thanks for your help N.A.G

I just realised i put this in the wrong thread, as its not high school maths. for that im sorry but i dont know how to move it so unless some one tells me how to or tell me how to delet it it will have to stay here lol soz