[SOLVED] How simplifying this ratio test for series? Basically, we are asked if (n!n^2)/(2n)! converges absolutely... I got to the point where lim as n --> infinity of [(n+1)!(n+1)^2]/(2(n+1))! X (2n)!/n!n^2 by the ratio test. But I don't know how to manipulate the factorials from here on...could anyone help? Thank you.