GMAT Practice Question: Which of the following represent positive numbers? I. -3-(-5) II. (-3)(-5) III. -5-(-3)
Question
Which of the following represent positive numbers? I. -3-(-5) II. (-3)(-5) III. -5-(-3)
- I only
- II only
- III only
- I and II
- II and III
Topics: calculations
Solution
Step 1
Statement I involves subtracting a negative number, which converts to addition of its positive counterpart.
-3-(-5) = -3 + 5 = 2
Step 2
Statement II involves multiplying two negative numbers, which yields a positive product.
(-3)(-5) = 15
Step 3
Statement III involves subtracting a negative number, converting to addition and then evaluating.
-5-(-3) = -5 + 3 = -2
Answer
Only statements I and II represent positive numbers, so the correct answer is D.
