Problem:
(.02)2(.2)3​=
Answer Choices:
A. .2
B. 2
C. 10
D. 15
E. 20
Solution:
(.02)2(.2)3​=.0004.008​=480​=20.
OR
.02.2​×.02.2​×.2=10×10×.2=20.
Answer: E​.
The problems on this page are the property of the MAA's American Mathematics Competitions