How many points will be on the face opposite to in face which contains 2 points?

1 5 4 6

6

By  visualisation of all dice we conclude that In figure IIIrd  and IVth Trick: Start with a common number in a clockwise direction: 1  2  3  1  6  4  therefore 1 is opposite to  5 2 is opposite to  6 3 is opposite to  4