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2012 Math Kangaroo

Problem 13

Problem 13 · 2012 Math Kangaroo Medium
Spatial & Visual Reasoning cube-viewsspatial-reasoning
Figure for Math Kangaroo 2012 Problem 13
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Answer: D
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Hint 1 of 2
The big block is split into three 4-cube pieces of one colour each; trace where the white cubes sit.
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Hint 2 of 2
Picture the white piece on its own and match its shape to an option.
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Approach: isolate the white 4-cube piece
  1. The whole solid is built from three pieces, each four equal cubes of one colour.
  2. Following the white cubes through the picture, they form one connected four-cube piece.
  3. Comparing that piece's shape with the five options identifies it.
  4. The matching shape is D.
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