Two positions of a cubical block are shown. When 5 is at the top which number will be at bottom?

Here the common faces with 4 dots are in same positions.

Hence 2 will be opposite to 5.

The letters of the adjacent faces to the face with letter A, are B, F, C and E. Hence D is the letter of the face opposite to the face with letters (A).

Here the common faces with number 3, are in same positions. Hence 6 is opposite to 2 and 5 is opposite to 1. Therefore 4 is opposite to 3.

The symbols of the adjacent faces to the face with symbol * are @, -, + and $. Hence the required symbol is 8.

In these 2 positions one common face with number 1 is in the same position. Hence according to the rule number (3), 2 is opposite 6 and 3 is opposite to 5. Therefore opposite to 4 is 1.

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.

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

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

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.

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.