In a standard dice, opposite faces always sum to 7.
This is a fundamental property:
- 1 is opposite to 6 (1 + 6 = 7)
- 2 is opposite to 5 (2 + 5 = 7)
- 3 is opposite to 4 (3 + 4 = 7)
Gujaal sees the number 2 on the top face of the dice.
The face exactly opposite to 2 must be:
7−2=5
Therefore, the number on the opposite face is 5.