Latest TCS Aptitude Question SOLUTION: A hollow cube of size 10 cm is taken, with a thickness of 1 cm. It is made of smaller cubes of size 1 cm. If 3 face of the outer surface of the cube are painted, totally how many f

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A hollow cube of size 10 cm is taken, with a thickness of 1 cm. It is made of smaller cubes of size 1 cm. If 3 face of the outer surface of the cube are painted, totally how many faces of the smaller cubes remain unpainted?

Asked In TCS kshitij (12 years ago)

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Dr.Dipin Singh  (12 years ago)

Total No of smaller cubes = 10^3 - 8^3 = 1000- 512 = 488
No of faces of smaller cubes = 488*6 = 2928
If 3 face of the outer surface of the cube are painted,then total 300 faces of smaller cubes are painted.
No of faces of the smaller cubes remain unpainted = 2928-300 =2628

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Md Rahil Siddiqui  (12 years ago)

dipin is RIGHT.!!!

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