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IKMC 2011 - Grades 9-10 - Self-study Question 26

IKMC · IKMC 2011 - Grades 9-10 - Self-study

Question 26

How many ordered natural-number pairs (x, y) satisfy $1/x+1/y=1/3$?
  1. 0
  2. 1
  3. 2
  4. 3
  5. 4