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: Science
Need help from the CP math whizzes
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03-02-2013, 09:16 PM
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cdcox
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The relationship in the pairs is:
(2a*10+a)/3a = 7 and (a*10+2a)/3a = 4 for a = 1,2,3,4
That's the why, but the way you would "just know it" would be playing with numbers all the time.
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