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IKMC 2007 - Grades 11-12 - Self-study Question 21

IKMC · IKMC 2007 - Grades 11-12 - Self-study

Question 21

Which number cannot be written as $x+\sqrt{x}$ for an integer $x$?
  1. 870
  2. 110
  3. 90
  4. 60
  5. 30