Direction: 216 cubes of similar size are arranged in the form of the bigger cube (6 cubes on each side, i.e.., 6 x 6 x 6).Its all the 6 faces are painted with Green, Red, blue, black, white, orange colours.
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How many cubes are painted with red or blue?
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- 60 or 72
- 66 or 72
- 62 or 72
- None of these
Correct Option: B
Here on each face 6 x 6 = 36 cubes that are painted with one colour.
Case (i): When red and blue are adjacent to each other then from one face we will get 6 x 6 = 36 cubes but out of them 6 cubes from common edge is common so number of cubes are 2 x 6 x 6 - 6 = 66
Case (ii): When red and blue are opposite to each other then required number of cubes is 2 x 6 x 6 = 72
