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Directions: One hundred and twenty-five cubes of the same size are arranged in the form of a cube on a table. Then a column of five cubes is removed from each of the four corners. All the exposed faces of the rest of the solid (except the face touching the table) are coloured red. Now, answer these questions based on the above statement:
Question: How many cubes have only one red face each?
16
25
36
none of these
There are 9 cubes namaed as m, n, o, p, q, r, s, t and u in layer 1,
and 4 cubes (in columns b, e, h and k) in each of the layers 2, 3, 4 and 5 got one red face.
Thus, there are 9 + (4 x 4) = 25 cubes.
Hence, option 2 is the correct answer.
By: Amit Kumar ProfileResourcesReport error
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