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Number Theory- GMATPrep

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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Number Theory- GMATPrep

by anks17 » Fri Aug 10, 2012 10:07 pm
Experts,

Please help to understand how we can arrive at answer. Did try with different numbers but couldn't get it.
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by theCEO » Sat Aug 11, 2012 1:52 pm
the answer could be reached by trying two values for x: 0.99 and 1.01.


x--------1/x------2x-------x2
0.99----1.01----1.98----0.9801


x--------1/x------2x-------x2
1.01----0.99----2.02----1.02
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