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UPSC Civil ServicesPrelims2023General Studies Paper II (CSAT)
Question
QQ18. 125 identical cubes are arranged in the form of a cubical block. How many cubes are surrounded by other cubes from each side ?
Options
- A 27
- B 25
- C 21
- D 18
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Correct Answer
A 27
Model Answer
Answer: option A, as per UPSC's final answer key (Series A).