Problem:
What is 1+3+52+4+6−2+4+61+3+5?
Answer Choices:
A. −1
B. 365
C. 127
D. 2049
E. 343
Solution:
Simplifying gives
1+3+52+4+6−2+4+61+3+5=912−129=34−43=1216−9=(C)127.
The problems on this page are the property of the MAA's American Mathematics Competitions