awilhelm Master | Next Rank: 500 Posts View User Profile Posts: 117 Joined: Fri Oct 17, 2008 7:41 am simple math by awilhelm » Tue Jan 20, 2009 2:57 pm (1001^2 - 999^2) / (101^2 - 99^2) a) 10 b) 20 c) 40 d) 80 e) 100 Fastest way to solve? Top Quote
