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EEJ MAIN Aptitude QUESTION #10986
Question 1
A cube of side $4$ cm is painted red on all faces and then cut into $64$ smaller identical cubes. How many of the small cubes have paint on exactly two faces?
  • $12$
  • $24$✔️
  • $36$
  • $48$
Correct Answer Explanation
In an $n \times n \times n$ cube, cubes with exactly 2 painted faces lie on the edges but not at corners. There are $12$ edges, each with $(n-2)$ such cubes. For $n=4$: $12 \times (4-2) = 12 \times 2 = 24$.