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IKMC 2023 - Grades 11-12 - Set 2 - Self-study Question 6

IKMC · IKMC 2023 - Grades 11-12 - Set 2 - Self-study

Question 6

How many pairs of positive integers $x,y$ satisfy $x+2y=2^{10}$?
  1. $2^9-1$
  2. $2^9$
  3. $2^9+1$
  4. $2^9+2$
  5. 0