Source: Official Guide Revised GRE 2nd Ed. Part 9; Section 6; #15

2

If a b 0, which of the following numbers

If a b 0, which of the following numbers must be positive? Indicate all such numbers. a – b, a – b , ab, a b, a b + ab

2 Explanations

1

Abdul Aziz

How you know these are integers.....what if b = - 0.1 and a = - 0.2?

Jun 2, 2018 • Comment

David Recine, Magoosh Tutor

You'll still get the same results. With decimals or fractions, the inequalities in the answer choices are ultimately unchanged. (Plug in -0.1 and -0.2 to see what I mean!)

Jun 4, 2018 • Reply

2

Gravatar Chris Lele, Magoosh Tutor

Dec 8, 2012 • Comment

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