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IMAS 2018 — Middle Primary Grades 3–4 — Round 1 Question 13

IMAS · IMAS 2018 — Middle Primary Grades 3–4 — Round 1

Question 13

Color the surfaces of a $ 5\times5\times5 $ wooden cube red, then cut it into smaller $ 1\times1\times1 $ cube pieces. How many of these smaller cubes have exactly two red faces?
  1. 36
  2. 48
  3. 61
  4. 90
  5. 98