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The Seven Primes (Posted on 2013-04-26) Difficulty: 3 of 5
Let a, b, c be positive integers such that a, b, c, a+b-c, a+c-b, b+c-a, a+b+c are 7 distinct primes.

The sum of two of a, b, c is 800.

If d be the difference of the largest prime and the least prime among those 7 primes, find the maximum value of d.

No Solution Yet Submitted by Danish Ahmed Khan    
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  Subject Author Date
analytical solutionxdog2013-04-26 21:16:45
Solutioncomputer solutionCharlie2013-04-26 17:47:32
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