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Jul 12, 2012 12:25 am
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Is it worth spending time on remembering alternate approach?
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Problem Solving (PS)
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How many different positive integers are factors of 441 ?
Apr 13, 2012
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ABCD is a parallelogram (see figure). The ratio of DE to EC
Apr 26, 2012
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If k^3 is divisible by 240 what is the least possible value
Apr 26, 2012
4
If C + D = 11 and C and D are positive integers, which of
Apr 26, 2012
2
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