The Q: Use your calculator to work out ln 15!
Compare the answer with the simple version of Sterling's theorem (ln n! = nln n - n)
How big must n be for the simple version of Stirling's theorem to be correct to within 2%?
The Attempt at a Solution
So I've done the first two parts.
But for the last I get that (ln n! - nln n + n)/ln n! < 0.02 which I don't know how to solve for n...