question_answer

How does the shape (X) below look like when folded in?

A)  A only                 

B)  D only  

C)  A and C only     

D)         A, B, C and D

Correct Answer: B

Solution :

 The figure (X) is similar to the Form VI. So, when the cube is formed by folding the sheet shown in figure (X), then  is one of the faces of the cube and this face lies opposite to the face bearing a circle. Also, one of the blank faces lies opposite to another blank face and yet another blank face lies opposite to the fourth blank face. Thus, out of the four blank faces, no three faces can appear adjacent to each  other, Clearly, the cube in figure [a] cannot be formed since there is no face of the type  the cube in figure [b] cannot be formed since the face  cannot appear adjacent to the face bearing the circle. Hence, only the cube in figure  can be formed.