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Set of fractions

Source: CAPS 2024 p1

July 4, 2024
number theoryIntersectionFractionsdecimal representation

Problem Statement

Determine whether there exist 2024 distinct positive integers satisfying the following: if we consider every possible ratio between two distinct numbers (we include both a/ba/b and b/ab/a), we will obtain numbers with finite decimal expansions (after the decimal point) of mutually distinct non-zero lengths.