NID UG 2020
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Q19.Shown in the optional images (1), (2), (3), (4) are regular polygons. Which among the two polygons given below will fill the Figure X?
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Q21.Choose the image that completes the pattern:
The image shows an arrangement of isometric cubes where some faces are shaded black and others are white. Calculate what percentage of the total visible surface area is shaded.