olymmath

AMC 10 2021b Problem 16

  • Paper

Call a positive integer an uphill integer if every digit is strictly greater than the previous digit. For example, 1357,89,1357, 89, and 55 are all uphill integers, but 32,1240,32, 1240, and 466466 are not. How many uphill integers are divisible by 1515? (A) 4(B) 5(C) 6(D) 7(E) 8\textbf{(A)} ~4 \textbf{(B)} ~5 \textbf{(C)} ~6 \textbf{(D)} ~7 \textbf{(E)} ~8

Dataset text NuminaMath-1.5. Quoted with source.

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