Two different positions of the same dice are shown below the six faces of which are numbered 1 to 6 ...........

Explanation:

In the above two dice 3,4,5,6 are presented in the adjacent sides of 1. So these four numbers cant be at the opposite surface of 1. Remaining number is 2. So 2 will be at the opposite surface of 1.Hence option 1 is the correct answer.