In a dice 1,2,3 and 4 dots are on the adjacent faces, in a clockwise order, and 5 and 6 dots at the top and bottom. When 1 dot is at the top, then what number of dots will be at the bottom?

3

THE LOGIC;

In dice 1, 2, 3 and 4 dots are on the adjacent faces, in clock-wise order (1 -> 2 -> 3 -> 4)

5 and 6 dots at the top and bottom.

The pair of opposite faces from the given data is:-

1 opposite to 3 dots

2 opposite to 4 dots

5 opposite to 6 dots

When, 1 dot is at the top then 3 dots will be at the bottom of the dice.

Thus, 3 is correct.