http://img180.imageshack.us/img180/9589/simplell9.jpg Is 1. c) as simple as i think it is? I have gone through my notes and can't find anything to do with it, the module for it is Numbers, symmetries and groups, any ideas or do i simple just wack in 13/7 on my calculator and write down the answer? Also, 1. d) I don't have a method of working that out. I tried this though: 24/10 + (1)SIGMA(n) 39/(10^2n+1) = 2.43939393939... But I don't know how to get this into a fraction from here.