2025 CSAT, all questions

UPSC Prelims 2025 · CSAT

Question 64: Basic Numeracy

Consider the following statements :

  1. IThere exists a natural number which when increased by 50% can have its number of factors unchanged.
  2. IIThere exists a natural number which when increased by 150% can have its number of factors unchanged.

Which of the statements given above is/are correct ?

aI only
bII only
cBoth I and II
dNeither I nor II

UPSC's 2025 key was reported published in May 2026, but no file was found on upsc.gov.in or in the Wayback Machine. The 2025 papers can be browsed, not scored.

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Source: UPSC, Civil Services (Preliminary) Examination 2025, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.