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VTMO 2015 — Grade 7 — semifinal Question 17

VTMO · VTMO 2015 — Grade 7 — semifinal

Question 17

Integers $4 , 4 , x , y , 13$ satisfy $4 \le x \le y \le 13$. How many pairs give an integer average?
  1. $7$
  2. $8$
  3. $9$
  4. $10$
  5. $11$