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IMAS 2015 — Upper Primary Grades 5–6 — Round 1 Question 7

IMAS · IMAS 2015 — Upper Primary Grades 5–6 — Round 1

Question 7

The diagram below is the seating plan of a cinema. How many blocks of three adjacent seats are unshaded, not counting those in the first row?

Question illustration
  1. 15
  2. 16
  3. 17
  4. 18
  5. 19