Exam-style question
Try this first
A set is ordered as {"p", "q", "r", "s"}. Which object is in the 2nd position?.
- A."p"
- B."q"
- C."r"
- D."s"
Model answer
What a good answer should say
- "q" is in the 2nd position.
Explanation
Why this works
Reading the ordered set from the beginning gives: 1st is "p", 2nd is "q", 3rd is "r", and 4th is "s".
Common mistake
No common mistake is linked to this question yet.