A) A and C only
B) A and B only
C) B and D only
D) C and D only
Correct Answer: A
Solution :
The figure (X) is similar to Form II. So, when the sheet shown in figure (X) is folded to form a cube then the two half- shaded faces lie opposite to each other, the face bearing a circle lies opposite to one of the two blank faces and the two remaining blank faces lie opposite to each other. Therefore, the cubes shown in figure [d] which has the two half-shaded faces adjacent to each other, cannot be formed by folding the sheet shown in figure (X). Also, the cube shown in figure [b] has the face bearing a circle adjacent to two blank faces. This is not possible since there is one blank face opposite to the circle and one blank face opposite to the third blank face. Hence, only the cubes in figures [a] and [c] can be formed.
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