olymmath

ISL 2022 N5

    For each 1⩽i⩽91 \leqslant i \leqslant 9 and T∈NT \in \mathbb{N}, define di(T)d_{i}(T) to be the total number of times the digit ii appears when all the multiples of 1829 between 1 and TT inclusive are written out in base 10. Show that there are infinitely many T∈NT \in \mathbb{N} such that there are precisely two distinct values among d1(T),d2(T),…,d9(T)d_{1}(T), d_{2}(T), \ldots, d_{9}(T). (United Kingdom)

    Dataset text NuminaMath olympiads. Quoted with source.

    Solutions

    No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.

    Add a solution

    Locator isl/2022/n5 · Tag 48TYB86SEY · Edit this page on GitHub · Keys: j next, k previous