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IKMC 2017 — Grades 5–6 Question 25

IKMC · IKMC 2017 — Grades 5–6

Question 25

The square floor in the picture is covered by triangular and square tiles in gray or white.

Question illustration

What is the smallest number of gray tiles that need to be swapped with a white tile so that the pattern looks the same from each of the four directions shown?
  1. Three triangles, one square
  2. One triangle, three squares
  3. One triangle, one square
  4. Three triangles, three squares
  5. Three triangles, two squares