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2002 AMC 10B Problems/Problem 16

Revision as of 17:23, 1 February 2009 by Ernie (talk | contribs) (New page: 16. For how many integers <math>n</math> is <math>\frac{n}{20-n}</math> the square of an integer? <math>\textbf{(A) } 1\qquad \textbf{(B) } 2\qquad \textbf{(C) } 3\qquad \textbf{(D) } 4\q...)
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16. For how many integers $n$ is $\frac{n}{20-n}$ the square of an integer?

$\textbf{(A) } 1\qquad \textbf{(B) } 2\qquad \textbf{(C) } 3\qquad \textbf{(D) } 4\qquad \textbf{(E) } 10$

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