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2020 Math Kangaroo

Problem 2

Problem 2 · 2020 Math Kangaroo Easy
Spatial & Visual Reasoning spatial-reasoning
Figure for Math Kangaroo 2020 Problem 2
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Answer: C
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Hint 1 of 2
The piece placed last sits on top; the first one placed is the most buried.
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Hint 2 of 2
Look for the shape that is covered by everything except the very first piece.
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Approach: read the stacking order from what covers what
  1. The piece placed last is fully on top; the piece placed first is the most hidden.
  2. The second piece is covered by everything except the first piece.
  3. Tracing the overlaps, the black circle is hidden beneath all the later pieces and only shows past the first.
  4. So the second piece she placed is the circle (C).
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