McGraw-Hill Education GRE 2019

Exercise: Positives and Negatives

Discrete Quantitative Questions

1. If a < b < 0, then which of the following must be true?

A ab < 0

B a + b > 0

C ab < 0

D b – a > 0

E a – b > 0

2. If xy > 0 and yz < 0, then which of the following must be negative?

A xyz

B xy^2 z

C x^2 y^2 z

D x^2 y^2 z^2

E xyz

3. If ab^2 > 0 and ac < 0, then which of the following must be true?
   (Indicate all the apply.)
   A ab >0
   B b > 0
   C ac < 0
   D b^2 c < 0
   E a(c^2 ) > 0


4. If 0 > x > y, then which of the following must be true? (Indicate all
   that apply.)

A^ x^2 – y^2 < 0

B^ y – x < 0

C^ x^12 < 1

D^ x + yx > 0

E^ y^2 – x^2 < 0

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