Problem: .4+.02+.006=.4+.02+.006=.4+.02+.006=
Answer Choices:
A. .012.012.012 B. .066.066.066 C. .12.12.12 D. .24.24.24 E. .426.426.426
Solution:
The sum is .426.426.426.
Answer: E\boxed{E}E​.
The problems on this page are the property of the MAA's American Mathematics Competitions