A dice (standard, opposite faces sum to 7) shows 5 on top and 3 facing you. Which number is on the bottom face?
- A.1
- B.2 ✓
- C.3
- D.4
Explanation: Opposite faces of a standard die always add to 7. The bottom is opposite the top (5), so bottom = 7−5 = 2.
Class 6 IMO Mathematics Olympiad practice · Visual & Spatial Reasoning · Mirror Images, Folding & Cubes
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