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AMC 8 2020 Problem 7

  • Paper

How many integers between 20202020 and 24002400 have four distinct digits arranged in increasing order? (For example, 23472347 is one integer.) (A) 9(B) 10(C) 15(D) 21(E) 28\textbf{(A) }\text{9} \textbf{(B) }\text{10} \textbf{(C) }\text{15} \textbf{(D) }\text{21} \textbf{(E) }\text{28}

Dataset text NuminaMath-1.5. Quoted with source.

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Locator amc8/2020/p7 · Tag 5MYM9N0RBW · Edit this page on GitHub · Keys: j next, k previous