Study the following positions of a dice and determine how many dots are there on the dice face opposite the one with three dots.

The logic followed here is: 'If two dice have the same face value in the given image then their clockwise or anticlockwise rotation of the face forms the opposite pair in the dice.'

As three dots is common on I and IV dices, it is clear that four dots, six dots, two dots, and one dot are adjacent to it, and the remaining dots i.e., five dots will be opposite to it.

Opposite pairs:

4 dots → 2 dots

6 dots → 1 dot

3 dots → 5 dots

So, the opposite side of "three dots" will be side "five dots".

Hence, the correct answer is "5".