Two different positions of the same dice are shown. Which number will be at the top if 6 is at the bottom?

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Given:

Logic: The Two common Face rule in dice states that if two dice are shown with two common faces in the same relative position, then the face opposite to the remaining third face in the first dice will be opposite to the third face in the second dice.​
So, 6 and 2 will be opposite to each other.
Hence, 2 will be at top when 6 is at bottom.​​

Thus, correct option is (d).