Explanation
1. Identify Common Faces
In the given images (I) and (II), we can see two common faces: numbers 6 and 4.
2. Apply the Dice Rule
When two positions of the same dice are shown and two faces are common in both positions, the remaining third faces in each position are opposite to each other.
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Faces in Position (I): 6,4,1
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Faces in Position (II): 6,4,5
3. Determine the Opposite Face
Since 6 and 4 are common in both positions, the remaining faces must be opposite to each other:
Therefore, when number 1 is at the top, number 5 will be at the bottom.
Correct Option: (c)