Please help-Difficult math problems

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by Lattefah84 » Fri Jan 01, 2010 4:59 am
hmboy17 wrote:does any one have some difficult maths problem ? Like we have sc-1000....cr 1000 ...
I need to do lot's of practice and facing short of material/............
sc 1000? I didn't get it, what are you exactly talking about?