UPSC 1995: A rectangular sump of dimensions 6 m × 5 m × 4 m is to be built by using bricks to make the outer dimension 6.2 m × 5.2 m × 4.2 m. Approximately how many bricks of size 20 cm × 10 cm × 5 cm are required to build the sump for storing water?

The correct answer is option (c): 15000. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.

This question was asked in UPSC CSE Prelims 1995, GS Paper 1, as Question 138. It falls under Science & Technology > Quantitative Aptitude.

This question is rated "moderate". It requires sound conceptual understanding of the topic.

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