2011 CSAT, all questions

UPSC Prelims 2011 · CSAT

Question 37: Logical Reasoning and Mental Ability

Consider the following figure and answer the item that follows : What is the minimum number of different colours required to paint the figure given above such that no two adjacent regions have the same colour ?

a circular figure of concentric rings, the rings divided into many regions by short radial lines
a3
b4
c5
d6

UPSC published no Prelims answer keys before 2012.

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Source: UPSC, Civil Services (Preliminary) Examination 2011, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.