Exam-style question
Try this first
What value is produced by evaluating the RPN expression 2 3 + 4 *?.
- A.9
- B.14
- C.20
- D.24
Model answer
What a good answer should say
- 20
Explanation
Why this works
The 2 and 3 are added to give 5. The result is then multiplied by 4, giving 20.
Common mistake
No common mistake is linked to this question yet.