Difference between revisions of "1975 AHSME Problems/Problem 10"

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Revision as of 18:14, 24 April 2016

We see that the result of this expression will always be in the form $(100\text{ some number of zeros}001)^2.$ Multiplying these together yields: \[110\text{ some number of zeros}011\]. This works because of the way they are multiplied. Therefore, the answer is $\boxed{(A) 4}$.