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HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04 Question 13

HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04

Question 13

Given $7x\equiv107\pmod{11}$, find the minimum integer value of $|x|$.
  1. 9
  2. 2
  3. 5
  4. 7