2025 CSAT, all questions
UPSC Prelims 2025 · CSAT
Question 46: Basic Numeracy
If n is a natural number, then what is the number of distinct remainders of (1^n + 2^n) when divided by 4 ?
a0
b1
c2
d3
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.
Source: UPSC, Civil Services (Preliminary) Examination 2025, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.