Three different positions of the same dice are given below. Find the number opposite of 7.

Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 3
In the second and third dice, 15 is common. So, start rotating either in the clockwise or anticlockwise direction.
Clockwise direction:
Dice 2: 15 3 20
Dice 3: 15 7 8
So, 3 is opposite to 7.