Bunuel wrote:

Which of the following represent positive numbers?

I. −3 − (−5)

II. (− 3)(−5)

III. −5 − (−3)

A. I only

B. II only

C. III only

D. I and II

E. II and III

Which of the following represent positive numbers?

I. −3 − (−5)

II. (− 3)(−5)

III. −5 − (−3)

A. I only

B. II only

C. III only

D. I and II

E. II and III

Solution:

To determine which expression is positive, we analyze Roman numerals, I, II, and III.

I. −3 − (−5) −3 − (−5) = - 3 + 5 = 2

I is positive.

II. (− 3)(−5) (− 3)(−5) = 15

II is positive.

III. −5 − (−3) −5 − (−3) = -5 + 3 = -2

III is NOT positive.

Thus, Roman numerals I and II are positive.

Answer: D

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Jeffery Miller

Head of GMAT Instruction

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