Exam-style question
Try this first
Which list contains only members of ℤ?.
- A.-4, -1, 0, 3
- B.-4, -1.5, 0, 3
- C.0.2, 1, 2, 3
- D.-2, 0, 4.75, 6
Model answer
What a good answer should say
- -4, -1, 0, 3
Explanation
Why this works
The first list contains only negative whole numbers, zero, and positive whole numbers. The other lists contain decimal values.
Common mistake
No common mistake is linked to this question yet.