Problem
2020 AMC 10B Problem 7
How many positive even multiples of 3 less than 2020 are perfect squares?
\textbf{(A)}\ 7 \qquad\textbf{(B)}\ 8 \qquad\textbf{(C)}\ 9 \qquad\textbf{(D)}\ 10 \qquad\textbf{(E)}\ 12
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