Exam-style question
Try this first
Why can reducing a problem to one that has already been solved be useful?.
- A.It allows a known solution to be used for the reduced problem
- B.It guarantees that no details need to be considered
- C.It means the original problem no longer needs to be represented
- D.It ensures that every possible solution must be written from scratch
Model answer
What a good answer should say
- It allows a known solution to be used for the reduced problem
Explanation
Why this works
If the problem has been reduced to an already-solved problem, the existing solution can help solve the new problem.
Common mistake
No common mistake is linked to this question yet.