Two 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 showing '3 '.

4 1 6 2

1

Step 1) In figure 1  and 2 Step 2) Compare both the figure and we find out 4 and 6 both are common Step 3)  Therefore 1 is the number which  will be opposite to 3.