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Omni-MATH / Given any set A=a₁,a₂,a₃,a₄ of four distinct positive integers, we denote the sum a₁+a₂+a₃+a₄ by s_(A). Let n_(A) denote the number of pairs (i,j) with 1≤i<j≤4 for which … · Discussion

Discussing Given any set A={a₁,a₂,a₃,a₄} of four distinct positive integers, we denote the sum a₁+a₂+a₃+a₄ by s_(A). Let n_(A) denote the number of pairs (i,j) with 1≤i<j≤4 for which … · Omni-MATH

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