Problem:
Three dice with faces numbered through are stacked as shown. Seven of the eighteen faces are visible, leaving eleven faces hidden(back, bottom, between). The total number of dots NOT visible in this view is
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Answer Choices:
A.
B.
C.
D.
E.
Solution:
The numbers on one die total , so the numbers on the three dice total . Numbers are visible, and these total . This leaves not seen.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions