

Subj:.....Multiplication
(S667)
From: MathNexus.wwu.edu on 1/11/2009 Drawing
from MathNexus...

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Source:
http://mathnexus.wwu.edu/Archive/problem/detail.asp?ID=150
The American Mathematics
Contest 8 exam is designed for
In the multiplication problem ABA x CD = CDCD,
What is your answer? .
. Hint: The problem actually was a multiple choice problem, where 15.39% of the students chose (A) 1, 16.15% chose (B) 2, 26.01% chose (C) 3, 17.68% chose (D) 4, 12.09% chose (E) 9, and 12.55% of the students did not answer the question. Does this information
help?
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THE SOLUTION
Solution Commentary:
It is perhaps easier to turn the
CD divides into CDCD 101 times. This means that ABA is 101 and A + B = 1. 
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