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If x and y are positive integers, what is the greatest common factor of x and y?

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by AAPL » Tue Nov 24, 2020 5:34 pm

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If x and y are positive integers, what is the greatest common factor of x and y?

1) When x is divided by y, the remainder is 1
2) x^2-2xy+y^2=1

OA D
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Source: — Data Sufficiency |