Problem:
On the contest Billy answers questions correctly, answers questions incorrectly and doesn't answer the last . What is his score?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
On the a student's score is the number of problems answered correctly. So Billy's score is . Because there is no penalty for guessing, if he wants to increase his score, he probably should fill in the last five answers.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions