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These five cubes are glued together and painted all over, base included, and then pulled apart. How many cubes have exactly five painted faces?

Competition practiceDice & Cubes
  • A2
  • B4
  • C3
  • D1

Step-by-Step Solution

A cube has five painted faces when it was glued to just one other cube. The top cube, the cube at the far right end and the cube at the front each touch only one cube: 3. The corner cube touches three others and the middle cube of the back row two.
Answer: C) 3

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