Last 10 Days Tips to Prepare for CSAT Logical Reasoning

Updated On -

Jun 14, 2017

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Shivani Tiwari

Content Curator

UPSC IAS Prelims exam comprises two papers – General Studies and Aptitude Test. The paper II on Aptitude Test is also popularly known as CSAT. CSAT basically consists of 4 sections - Comprehension, Logical Reasoning and Analytical Ability, Mathematics and Decision Making.

Logical Reasoning is one of the major sections in CSAT in terms of weightage. Most of the questions in CSAT are application oriented.  A lot of questions in Logical Reasoning are based on Arrangement.

This article focuses on discussion of preparation strategy for CSAT Logical Reasoning Section, previous year trends and important resources for preparation of Logical Reasoning.

IAS is national level competitive examination for recruitment of candidates for various Group ‘A’ and ‘B’ posts in several central government ministries/departments/cadres.

  • IAS (Indian Administrative Services) exam is a three-tier exam: Preliminary Exam, Main Exam and Personal interview.
  • This year, IAS Prelims is set to be conducted on June 18, 2017.
  • It consists of 2 papers- General Studies and Aptitude test. Both papers are of 200 marks each and are conducted in both English and Hindi.
  • The General Studies Paper has 100 questions and the duration of Paper is 2 hours while the Aptitude Paper has 80 questions and the duration is 2 hours. 

CSAT Exam Pattern

IAS Prelims is basically a screening test. CSAT is an objective paper and candidates will be awarded one mark for every correct answer. There will be also a deduction of 1/3 mark for every incorrect response. Candidates can check the exam pattern for CSAT explained below.

Four Sections in CSAT Paper II (Aptitude)

  1. Comprehension (i) to test your understanding (ii) to test English
  2. Logical reasoning and analytical ability
  3. Mathematics
  4. Decision making (without negative marking)

CSAT Logical Reasoning Weightage

Candidates can check the topic wise weightage of marks in the Logical Reasoning section based on last few year trends. The questions based on the arrangement clearly have the highest weightage. Logical reasoning is expected to carry around 30-35 % weightage in CSAT 2017.

Type Reasoning Topics 2011 2012 2013
High Level Syllogism 3 5 0
Logical connectives 0 2 0
assumption / inference / conclusion 0 5 0
Subtotal: High level Reasoning 3 12 0
Arrangement 1 case vs. many questions 0 5 11
1 case 1 question 1 7 5
blood relation 3 1 0
Direction sense test 1 0 0
Sub Total: Sitting Arrangement 5 13 16
Non-Verbal reflection from mirror 1 0 0
min. colors required to paint 1 0 0
which figure next 0 2 3
Cube figure 0 2 1
Subtotal: Non-Verbal 2 4 4
Misc Venn Diagrams 1 1 1
Missing number pattern 1 0 3
Subtotal: Misc 2 1 4
Total Final Total Reasoning 12 30 24
% weightage in Paper II 15 37.5 30

Sample Questions for CSAT Logical Reasoning

Some frequently questions for CSAT Logical Reasoning to help students are mentioned below. Since these questions are application oriented, candidates are advised to read and understand the questions carefully before they proceed to solve them.

  1. Guest lectures on five subjects viz., Economics, History, Statistics, English and Mathematics have to be arranged in a week from Monday to Friday. Only one lecture can be arranged on each day. Economics cannot be scheduled on Tuesday. Guest faculty for History is available only on Tuesday. Mathematics lecture has to be schedules immediately after the day of Economics lecture. English lecture has to be scheduled immediately before the day of Economics lecture.

1.Which lecture is scheduled on Monday?

a) History

b) Economics

c) Mathematics

d) Statistics


2.Which lecture is scheduled between Statistics and English?

a) Economics

b) History

c) Mathematics

d) No lecture


3.Which lecture is the last one in the week?

a) History

b) English

c) Mathematics

d) Economics


4.Which lecture is located scheduled on Wednesday?

a) Statistics

b) Economics

c) English

d) History


5.Which lecture is scheduled before the Mathematics lecture?

a) Economics

b) History

c) Statistics

d) English

(B) Examine the following statements:

  1. None but the rich ran afford air-travel.
  2. Some of those who travel by air become sick
  3. Some of those who become sick require treatment

6.Which one of the following conclusions can be drawn from the above statements?

a) All the rich people travel by air.

b) Those who travel by air become sick

c) All the rich persons become sick.

d) All those who travel by air are rich


(C)  In five flats, one above the other, live five professionals. The professor has to go up to meet his IAS officer friend. The doctor is equally friendly to all, and has to go up as frequently as go down. The engineer has to go up to meet his MLA friend above whose flat lives the professor's friend.

From the ground floor to the top floor, in what order do the five professionals live?

a) Engineer, Professor, Doctor, IAS officer, MLA

b) Professor, Engineer, Doctor, IAS officer, MLA

c) IAS officer, Engineer, Doctor, Professor, MLA

d) Professor, Engineer, Doctor, MLA, IAS officer


(D) A person X was driving in a place where all roads ran north-south or east-west, forming a grid. Roads are at a distance of 1 km from each other in a parallel. He started at the intersection of two roads, drove 3 km north, 3 km west and 4 km south. Which further route could bring him back to the starting point if the same route is not repeated?

  1. 3 km east, then 2 km south
  2. 3 km east, then 1 km north
  3. 1 km north, then 2 km west
  4. 3 km south, then 1 km north

(E) A person can walk a certain distance and drive back in six hours, He can also walk both ways in 10 hours, How much time will he take to drive both ways?

1.  Two hours

2. Two and a half hours

3.  Five and a half hours

4. Four hours

(F)  Four friends A, B, C and D distribute some money among themselves in such a manner that A gets one less than B, C gets 5 more than D, D gets 3 more than B. Who gets the smallest amount?

  1.  A
  2.  B
  3.  C
  4.  D

(G) Five cities P, Q, R, S and T are connected by different modes of transport as follows:

P and Q are connected by boat as well as rail

S and R are connected by bus and boat

Q an T are connected by air only

P and R are connected by boat only

T and R are connected by rail and bus.

1. Which mode of transport would help one to reach R starting from Q but without changing the mode of transport?

a) Boat

b) Rail

c) Bus

d) Air

2. lf a person visits each of the places starting from P and gets back to P, which of the following places must he visit twice?

a) Q

b) R

c) S

d) T

3. Which one of the following pairs of cities is concerned by any of the routes directly without going to any other city?

a) P and T

b) T and S

c) Q and R

d) None of these

4. Between which two cities among the pairs of cities given below are there maximum travel options available?

a) Q and S

b) P and R

c) P and T

d) Q and R

(H) In a code language, ‘SOLID’ is, written as ‘WPSLPIMFHA’. What does the code ‘ATEXXXQIBVO’ refer to?

  1. EAGER
  2. WAFER
  3. WAGER
  4. WATER

Last Ten Days Tips for CSAT Logical Reasoning

UPSC IAS exam is scheduled to be held on June 18, 2017. Aspirants are already in the final lap of UPSC IAS Exam preparation and it is time for them to recall and revise whatever they have gone through so far in their preparation.
Candidates can refer to some of the important tips mentioned below for while preparing for CSAT.

  • Try to be an active reader. Analyze the structure and purpose of the passage, determining the topic, paraphrasing complicated portions, etc.
  • Find patterns and themes in the possible solutions in case other things are not working.
  • Apply one rule at a time while solving questions based on Logical Reasoning. A lot of data is actually provided in the question to confuse the candidates.
  • It is advisable not to worry about what more you could have studied or need to study instead aspirants should revise their notes and recall all the important points.
  • Revise all the important questions from the mock tests you have given.
  • Aspirants should go through the previous year’s UPSC question paper and try to solve it within stipulated time limit.
  • Take clear IAS Prelims Mock exams to understand the pattern of questions. By attempting the mock tests, you get a chance to identify your mistakes. This will give you the confidence boost required to succeed in the exam.
  • In the busy schedule of last moment preparation don’t neglect your health. Therefore, we recommend you some healthy tips to follow during this period along with these last-minute preparation tips.

1.Proper sleep and balanced diet is highly recommended to stay active.

2.Aspirants should stay tension free and avoid unnecessary negative thought processing during this time.

*The article might have information for the previous academic years, please refer the official website of the exam.