2012 CSAT, all questions

UPSC Prelims 2012 · CSAT

Question 59: Logical Reasoning and Mental Ability

Examine the information given in the following paragraph and answer the items that follow : · as printed by UPSC
Passage beginning “Guest lectures on five subjects viz.,…”

Which lecture is the last one in the week ?

aHistory
bEnglish
cMathematics
dEconomics

AnswerUPSC’s answer is (c).

The full order is Monday Statistics, Tuesday History, Wednesday English, Thursday Economics, Friday Mathematics. It follows because History must be on Tuesday, and English, Economics and Mathematics need three consecutive days in that order that avoid Tuesday, which only Wednesday to Friday allows. The last lecture of the week, on Friday, is Mathematics.

Why each option is right or wrong
  • (a) Wrong. History is on Tuesday.
  • (b) Wrong. English is on Wednesday.
  • (c) Right. Mathematics is on Friday, the last day.
  • (d) Wrong. Economics is on Thursday.

Answer: UPSC’s key. Explanation: written by UPSC Grade, not by UPSC.

Source: UPSC, Civil Services (Preliminary) Examination 2012, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.