wu :: forums (http://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi)
riddles >> putnam exam (pure math) >> Another Factorial Sum
(Message started by: ThudnBlunder on Feb 15th, 2011, 6:48pm)

Title: Another Factorial Sum
Post by ThudnBlunder on Feb 15th, 2011, 6:48pm

Evaluate n! + (n + 1)!/1! + (n + 2)!/2! + (n + 3)!/3! +........+ (n + m)!/m!

Title: Re: Another Factorial Sum
Post by JohanC on Nov 25th, 2011, 8:57am

(m+n+1)! / ((n+1)*m!)

Title: Re: Another Factorial Sum
Post by ThudnBlunder on Nov 25th, 2011, 11:31am
Correct.



Powered by YaBB 1 Gold - SP 1.4!
Forum software copyright 2000-2004 Yet another Bulletin Board