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AMC 12 2022a Problem 10

  • Paper

How many ways are there to split the integers 11 through 1414 into 77 pairs such that in each pair, the greater number is at least 22 times the lesser number?

(A) 108(B) 120(C) 126(D) 132(E) 144\textbf{(A) } 108 \textbf{(B) } 120 \textbf{(C) } 126 \textbf{(D) } 132 \textbf{(E) } 144

Dataset text AMC 12 2000 to 2025. Quoted with source.

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E

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