1. The problem statement, all variables and given/known data I need to find the limit of the sequence: [(1+1/n)(1+2/n)(1+3/n)...(1+n/n)]^(1/n) as n approaches infinity. I know that the limit should come out to 4/e, but I cannot figure out why. 2. Relevant equations None. 3. The attempt at a solution The original sequence is equivalent to [(2n)!/(n!*n^n)]^(1/n), but I have absolutely no idea what to do with it after that. Can anybody point me in the right direction?