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Two of them

Source: UMD 2023 I #15

October 23, 2023
UMDalgebra

Problem Statement

What is the least positive integer mm such that the following is true?
Given m\it m integers between 1\it1 and 2023,\it{2023}, inclusive, there must exist two of them a,b\it a, b such that 1<ab2.1 < \frac ab \le 2. a. 10b. 11c. 12d. 13e. 1415\mathrm a. ~ 10\qquad \mathrm b.~11\qquad \mathrm c. ~12 \qquad \mathrm d. ~13 \qquad \mathrm e. ~1415