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AMC 10 2017a Problem 23

  • Paper

How many triangles with positive area have all their vertices at points (i,j)(i,j) in the coordinate plane, where ii and jj are integers between 11 and 55, inclusive? (A) 2128(B) 2148(C) 2160(D) 2200(E) 2300\textbf{(A)}\ 2128 \textbf{(B)}\ 2148 \textbf{(C)}\ 2160 \textbf{(D)}\ 2200 \textbf{(E)}\ 2300

Dataset text NuminaMath-1.5. Quoted with source.

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2148

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