Problem:
Which of the following numbers is the largest?
Answer Choices:
A.  
B.  
C.  
D.  
E.  
Solution:
We can compare the five numbers in the set by annexing zeroes so each one has four decimal places. The numbers, then, are , .9009$ so that is the largest.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions