According to the rule no. (3), common faces with number 2 are in same positions. Hence when the digit 5 is on the bottom then 1 will on the upper surface.
2. Two positions of a dice are shown below. Which number will appear on the face opposite to the face with the number 5?
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.
3. Two positions of dice are shown below. How many points will be on the top when 2 points are at the bottom?
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.
4. Here 4 positions of a cube are shown. Which sign will be opposite to '+'?
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.
7. Two positions of dice are shown below. How many points will appear on the opposite to the face containing 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.
8. Two positions of a dice are shown below. When 3 points are at the bottom, how many points will be at the top?
According to the rule (2) when 'one' is at the top, then 5 will be at the bottom.
10. Observe the dots on the dice (one to six dots) in the following figures. How many dots are contained on the face opposite to the containing four dots?
Here one of the two common faces (5) is in the same position, then according to the rule no (2) the remaining face with the 4 dots will be opposite to face with dots 2.