Four different positions of the same dice are shown, the six faces of which are numbered from 1 to 6. Select the number that will be on the face opposite to the one having the number '1'.

3

Step 1) In figure IInd and IIIrd  3  is common

Step 2) The number ‘3’ is common in both the dice, but it is at a different position. In order to find out, the number appearing on the opposite face, rotate the dice in a clockwise direction with the common number as the reference.

Step 3)  3    4     2

              3     6     5

Step 4)   4  is opposite to 6

               2  is opposite  to 5

therefore ,

             3  will  be  opposite  to 1