by tommywallach Thu Dec 05, 2013 12:16 pm
Hey Maria,
Hmm. Well, your explanation makes me worry you don't quite understand QC. Maybe you're just being a little lazy on the explanation, but in the future, try to go a little further.
The answer is not (D) because the range isn't specified. It's (D) because the range that IS specified could be either EQUAL to 13, or LESS than 13.
The biggest the range could be is from -5 to 8, which would be a range of 13. This means the two columns COULD be equal, eliminating answer choices (A) and (B). From there, the range could be from -4 to 6, which would be a range of 10, meaning column A would be smaller than Column B, so the answer is (D).
To be clear, if the question were worded slightly differently, the answer would not be (D).
Question: A set of consecutive integers contain -4 and 6. However, -5 and 9 are not in the set.
This question would not be (D)!
-t