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Worked Examples

Example-1

A sheet of paper, as shown in the figure, is folded so as to form a cube. Identify the faces and choose the correct answer from the four alternatives. How many dots would be opposite the face having five dots?

 

Description: 45019.png

  1. 3
  2. 6
  3. 4
  4. 2

Solution

The given figure is similar to the figure in Type 4. Hence, the face with three dots would be opposite to the face with five dots.

 

Answer: (1)
 

 

Example-2

Figure X, given on the left hand side, is folded to form a box. Choose the correct alternative from (1), (2), (3) and (4) the boxes that are similar to the box formed.

 

Description: 45029.png

  1. A only
  2. A, B and C only
  3. B and C only
  4. A, B, C and D

Solution

Each one of the cubes (A), (B), (C) and (D) resembles the cube formed by folding figure X.

 

Answer: (4)
 





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