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IKMC 2012 - Grades 9-10 - Self-study Question 10

IKMC · IKMC 2012 - Grades 9-10 - Self-study

Question 10

Both 144 and 220 leave remainder 11 when divided by positive integer N. Find N.
  1. 7
  2. 11
  3. 15
  4. 19
  5. 38