Lesson 3 of 3 · Dice: views, opposite faces and open nets
Standard dice
Cubes and Dice · for IPMAT Indore, IPMAT Rohtak and JIPMAT · asked in Rohtak 2020
Worked examples
Example 4Typical
Rohtak 2020: dice drawn with sides showing (3, 6), (6, 3) and (1, 5); opposite faces add to 7; each of these has an even number on top. Total on top?
Solution: 8. The top is neither a visible face nor its opposite: (3, 6) leaves 2 or 5 → 2; (6, 3) → 2; (1, 5) leaves 3 or 4 → 4. 2 + 2 + 4 = 8.
Formulas you need
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