Problem:
On this monthly calendar, the date behind one of the letters is added to the date behind . If this sum equals the sum of the dates behind and , then the letter is:
Answer Choices:
A.
B.
C.
D.
E.
Solution:
Since the date behind is one less than that behind , the date behind the desired letter must be one more than that behind . This date is behind .
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions