For how many ordered pairs of positive integers (x, y),

Saluran Edukasion 2024-05-31T23:37:00

For how many ordered pairs of positive integers (x, y), with y < x <= 100, are both x/y and (x + 1)/(y + 1) integers?
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For how many ordered pairs of positive integers (x, y), with y < x <= 100, are both x/y and (x + 1)/(y + 1) integers?