Problem:
The fraction halfway between 51​ and 31​ (on the number line) is
Answer Choices:
A. 41​
B. 152​
C. 154​
D. 20053​
E. 158​
Solution:
231​+51​​ = 2158​​=154​.
Answer: C​.
The problems on this page are the property of the MAA's American Mathematics Competitions