From GMAT Prep (integers)

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Source: — Data Sufficiency |

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Re: From GMAT Prep (integers)

by jayhawk2001 » Wed Nov 14, 2007 4:46 pm
Using 1, x = y * (3y + 7). So, x is a multiple of y. (3y + 7) cannot be zero

Using 2, y = x * (x - 1). We can't say if x is a multiple of y

Hence A