A square sheet is folded in half twice. One hole is punched away from the folds. How many holes appear when unfolded?
- A.4 ✓
- B.2
- C.3
- D.8
Explanation: Two folds create 4 layers, so one punch through all layers becomes 4 holes when unfolded.
Class 6 IMO Mathematics Olympiad practice · Visual & Spatial Reasoning · Mirror Images, Folding & Cubes
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