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Dangerous Expression for Rationals (Posted on 2013-03-31) Difficulty: 3 of 5
Prove or disprove the following statement:

Each positive rational number can be written in the form: (a^2+b^3)/(c^5+d^7)
where a,b,c,d are positive integers.

No Solution Yet Submitted by Danish Ahmed Khan    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
re(3): Question?Charlie2013-04-05 09:28:17
re(2): Question?Salil2013-04-05 07:10:48
I don't doubt it.broll2013-04-05 06:17:39
re: Question?Charlie2013-04-05 00:51:40
Question?Salil2013-04-05 00:45:28
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