GMATPrep Algebra: If 2 of the four expressions $x+y, x+5y, x-y, 5x-y$ are chosen at random, what is the probability
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GMATPrep Algebra: If 2 of the four expressions $x+y, x+5y, x-y, 5x-y$ are chosen at random, what is the probability
Sign Up for a comprehensive online GMAT quantitative course.