When the digit 5 is on the bottom then which number will be on its upper surface?

According to the rule no. (3), common faces with number 3, are in same positions. Hence the number of the opposite face to face with number 5 will be 6.

In these 2 positions of a dice, one common face having points 3 is in the same position. Hence according to rule (3), there will be 4 points on the required face.

From position I and III common face with % is in the same position. Hence according to rule (3) opposite is X.

The colours adjacent to yellow are orange, blue, red and rose. Hence violet will be opposite to yellow.

In first two positions of dice one common face containing 5 is same. Therefore according to rule no. (3) the face opposite to the face which contains 2 point, will contains 6 points.

As the numbers 2, 3, 4 and 5 are adjacent to 6. Hence the number on the face opposite to 6 is 1.

The adjacent faces to the face which 3 points have 2, 1, 4 and 6 points. Hence on the face which is opposite to the face which contains 3 points, there will be 5 points.

In these two positions one of the common face having 1 point is in the same position. Therefore according to rule (2). There will be 4 points on the required face.

According to the rule (2) when 3 points are at the bottom then 4 points will be at the top.

According to the rule (2) when 'one' is at the top, then 5 will be at the bottom.