Problem:
101​+1009​+10009​+100007​=
Answer Choices:
A. 0.0026
B. 0.0197
C. 0.1997
D. 0.26
E. 1.997
Solution:
In decimal form:
+++​0.10.090.0090.00070.1997​​
Answer: C​.
The problems on this page are the property of the MAA's American Mathematics Competitions