Algebra

The number of positive integer valued pairs (x,y) satisfying 13x – 5y = 14 and x ≤ 500 is
A. 50
B. 100
C. 200
D. More than 300

 

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4 comments

  1. 100
    13x-14=5y
    Put any number for x<=500 ending with 3 or 8, the result would be a positive integer.

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