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IKMC 2012 - Grades 7-8 - Self-study Question 24

IKMC · IKMC 2012 - Grades 7-8 - Self-study

Question 24

Arrange 1–12 in a circle so that neighbours differ by 2 or 3. Which pair must be neighbours?
  1. 5 and 8
  2. 3 and 5
  3. 7 and 9
  4. 6 and 8
  5. 4 and 6