Data Interpretation for CAT and Logical Reasoning for CAT are now clubbed together and form a new DILR section. DI questions for CAT with solutions are available online also. The data interpretation for CAT syllabus is also a little more defined than other CAT sections. The Data Interpretation Study material like Data Interpretation for CAT by Arun Sharma; The Pearson Guide for logical Reasoning and Data Interpretation are the few of the best books for CAT 2017 prepration. Data interpretation and Logical Reasoning study material for CAT 2017 is available online also which can help you in CAT 2017 DILR preparation and will also save your time also.
Candidates who appear in IIMs Common Admission Text (CAT) find DILR as the most difficult and time consuming section. Candidates can hardly solve only a few DILR questions in CAT exam. Now, with creation of new section in CAT comprising only DILR questions, CAT has detached the DI questions and LR questions from their respective parent sections of Quant and Verbal. Now DILR is the 3rd section in CAT exam which requires higher focus on DILR preparation.
DILR: Very important in CAT 2017
Instead of earlier 2 sections there are now be 3 sections in CAT. Since 2015 CAT exam has been totally revamped. There are 34 questions in Quant section; 32 in newly created DILR section and 34 in Verbal & RC (VARC) section. Each of the 3 sections will have to be solved within the individually and equally divided time limit of 60 minutes without any facility to move from one section to another before completion of 60 minutes to the particular section.
The new DILR section now is as important as other 2 sections in CAT 2017 as sectional cut offs announced by IIM Ahmedabad, IIM Calcutta, IIM Lucknow and other IIMs for DILR section are the same as applicable for Quant and VARC sections. If you have to score 85 percentile in Quant and VRC sections, you will have to score 85 percentile minimum in CAT 2017 in DILR section also to get shortlisted by IIMs for admission to batch 201820. The actual cut off percentile in DILR section in CAT 2017 may be higher than the announced cut off, depending upon the merit status and scoring pattern.
Division of DILR questions in CAT exam
Total Questions: 32
Total available time to solve: 1 hour (60 minutes)
Number of DI questions in CAT 2017: 16
Number of LR questions in CAT 2017: 16
Number of DILR MCQs in CAT 2017: 24 (DI12; LR12)
Number of DILR NonMCQs in CAT 2017: 8 (DI4; LR4)
Type of DILR Questions: 8 sets with 4 questions in each set
Maximum Marks per right answer: 3
Negative marks for wrong answerMCQ: 1
Negative marks for wrong answerNonMCQ: No negative marking for Non MCQs
DILR in CAT 2017Game changer
Those who can crack more questions on Data Interpretation and Logical reasoning in CAT 2017 will be able to score very high getting an edge over their peers.
Questions on Data Interpretation and LR in CAT 2017 could prove to be the prime factors to push your score up or pull the same down according to the ability with which the section is attempted in 60 minutes. The questions in DILR section are always more time consuming as well as require more skills to crack.
Most of the DILR questions are in a set of 45 questions following a problem set. The questions are expected to be based on tricky information rich problems in the form of bar diagrams, graphs, tables on Data Interpretation while questions on Logical Reasoning will need greater practice work on Seating arrangement, family tree, direction, rows, arguments, statements among others. Remember practicing the right approach to solve the questions could be the key to score high.
Part1: Data Interpretation preparation for CAT 2017
Candidates appearing in earlier exams prior to CAT 2015 used to pay less attention to questions on Data Interpretation and Logical reasoning as they were well aware that they had more questions at their disposal on Quantitative Aptitude and Verbal Ability, which they used to prepare well.
No longer can you skip DILR question sets. You have to prepare and practice to achieve the high standards as you do in Quant and Verbal sections. Please remember any laxity in practice & preparation to achieve high score in DILR section can bleak your admission chances in IIMs who are not concerned only about the high over all percentile but need high and balanced sectional percentile also.
If you score a percentile of 97 in Quant; 96 in VRC but lag behind to 79 in DILR, despite scoring a high percentile of 97 or 98 in CAT 2015, you will not get shortlisted by IIMs as they need a minimum of 80 to 85 percentile in each of the 3 sections.
The tricky, twisting and time consuming questions coming in sets in CAT Data Interpretation were attempted on pick and choose basis, that too, if they could quickly be solved. Since one problem was followed by many questions, if a few could be answered correctly, the job was considered as done.
CAT Data Interpretation Syllabus
CAT Data Interpretation syllabus covers almost all types of data comparison and data analysis questions that could be formed on data table; bar diagrams; graphs; pie charts among other data representative modules. With a regular practice and improving the skills on Data analysis and data comparison, the DI questions in CAT could be answered by applying these improved skills in shorter time.
CAT DI questions are based on data analysis, data sufficiency and data comparison. IIMs CAT places 16 Data Interpretation questions in MCQ and NonMCQ format in 4 sets.
Topics on which DI questions are based
 Data Tables;
 Data charts
 Bar diagrams
 Pie charts
 Graphs
 Data analysis and comparison
 There are 4 sets of DI problems in CAT. Each problem is followed by 4 questions.
 Questions on interpretation and analysis of data based on text, tables, graphs (line, area), charts (column, bar, pie), venn diagram, are asked.
 Data could be given in form of tables, charts or graphs. In this section it is tested how candidates can interpret the given data and answer questions based on it.
Free download data interpretation questions with solutions for CAT 2017 are available online and should be practiced well.
Key changes in CAT Data Interpretation section
Data Interpretation in CAT, since 2010 to 2014 was clubbed with Quant section. Till 2013 the Data Interpretation questions continued to be a sub part of Quantitative Ability section with 10 questions in MCQ format. This pattern continued in CAT Data Interpretation part till 2014 with only change that the number of questions in CAT Data Interpretation increased to 16 in 2014.
CAT Data Interpretation section was totally revamped in 2015 when CAT was conducted by IIM Ahmedabad. Data Interpretation in IIM  Common Admission Test was separated from Quantitative Ability section. A new 3^{rd} section in CAT exam was created. New CAT section consisted of Data Interpretation and Logical Reasoning questions only. The new DILR section in CAT has 32 questions. Out of the 32 questions, share of Data Interpretation questions in CAT exam is 16 which means that DI in CAT carries individual weight of 50% marks instead of 30 to 33% earlier when DI in CAT was clubbed to Quantitative Ability.
Another key change brought by IIMs in CAT Data Interpretation questions is that it now consists of Objective Multiple Choice Questions (MCQs) as well as NonMCQs.
Division of MCQs and non MCQs in CAT Data Interpretation questions
CAT Data Interpretation – type of questions  Number of questions 
MCQs with answer options  12 
NonMCQs (May or may not be with answer options)  4 
How to answer CAT Data Intyerpretation  NonMCQ
For MCQs you simply click on the answer option and click on ‘save & next’, your answer is recorded in CAT exam.
For Non MCQ questions, you are supposed to type in the answer/ answer option in the space provided on the screen using the onscreen keyboard. Accordingly, if you click on the answer option only, your answer for NonMCQ in CAT data interpretation will not be recorded.
Data Interpretation in CAT 2017: How to Prepare?
If you can hit 10 DI questions correct in CAT 2017 out of 16 questions, your battle in DILR section in CAT is won to a great extent. There is no dearth of time as well since you have full 60 minutes for 32 questions in DILR questions in CAT– meaning about 2 minutes to answer each question in DILR section in CAT 2017.
In fact, Data Interpretation questions in CAT need less efforts and the questions in this section carry all the required information with data. You need to analyse and compare the data to arrive at the answer. If practiced well, the tricky questions in DI part of CAT can be understood and solved fairly easily. DI in CAT serves as an aid to facilitate your entry to the top Bschools since it improves your percentile with a little understanding of the data based questions.
If you are not in the habit of jumping to answer options without solving the question, it will be better to answer NonMCQs first as the wrong answers to NonMCQs will not carry any negating marking while there will be a penalty of onethird mark for MCQs.
Practice is the key
 The need for Practice in DI questions is very much required. Remember that even Tendulkar used to go for a net practice before every match. It’s not that he was not aware of a batting type, but practice keeps you alert.
 Practice upon Quality Questions which are NONREPETITIVE in nature
 Get a good book for LRDI, and solve 4–5 sets (i.e. 20 questions everyday). Find how to approach a question in DI as well as LR.
 There are questions at Foundation, Moderate and Advanced levels with solutions and explanations in the books on DI and LR. After attempting the exercises, analyse your mistakes and make sure you do not repeat them.
 If you find yourself average in an area it means that you have not solved similar questions earlier. It is your time  to go through the concepts and solve the questions  that will take you to higher levels of intelligence.
 The good part is  types of questions asked in CAT are finite. A question is difficult only if you are seeing it for the first time. If you find a question difficult even if you are seeing it for the second time, ask yourself  Are you honest enough with your preparation?
Solve Data Interpretation CAT questions with various difficulty levels
The best method to understand and solve CAT Data Interpretation questions, is to go for LOD=1 to LOD=3. The problem with DI questions is that they all need data comparison, data analysis and if you are correct in your analysis, you will hit the entire set of questions correct otherwise, you may lose your marks for entire set of 4 questions. If one goes wrong all may go wrong.
Try to solve as many questions on all difficulty levels, as possible. Never be shy of practice on DI. Once it is done, you will develop the methodology and will come to know beforehand whether you will be able to solve a particular DI question, when it appears in the examination or should leave that and move ahead.
Sample CAT Data Interpretation questions & answers
Direction for questions 1 – 4: Read the passage below and solve the questions based on it.
Following table gives the result of dueNorth soccer competition. Matches were played round robin (each team playing against another once) and the teams participated were Bihar, Punjab and Haryana. The table has some data missing:
Match played  Won  Drawn  Lost  Goals for  Goals against  
Bihar  2  1  2  4  
Punjab  2  3  7  
Haryana  1 
Q1. What is the total number of matches played in the competition?
1. 3 2. 6 3. 9 4. None of these
Q2. What did the score card read in favor of Punjab in PunjabHaryana match?
1. 25 2. 15 3. 14 4. 16
3.How many matches did Punjab lose?
1. 0 2. 1 3. 2 4. 0 or 1
4.How many goals did Haryana score?
1. 5 2. 1 3. 3 4. 7
uick tips to Solve in CAT 2017
You may find one question set with 45 questions based on games. You must know the quick and accurate approach to solve these question sets.
In this set of questions, we are 1^{st} required to calculate total number of matches. Let us understand the scheme of matches in a Round Robin League tournament.
Method 1  In a round robin league tournament, each team plays against other team once. So if there are five teams A, B, C, D and E (let us assume), total number of matches are going to be the following:
AB, AC, AD, AE
BC, BD, BE
CD, CE,
DE
Hence total number of matches = 4 + 3 + 2 + 1 = 10.
In general, if there are n teams, then total number of matches = (n1) + (n2)+….+3 + 2 + 1 = (n(n1))/2
Method 2  each team plays one match with every other team. So, number of matches played by each team = 4. So total number of matches = 5 teams × 4 matches = 20 matches. But each of these matches has been counted twice – for example match AB and BA both have been counted.
So total number of unique matches = 20/2= 10 matches.
Method 3 – Using Permutation and Combination
There is a match for every set of two players. So, if there are n players, total number of matches = nC2.
In this question, there are three teams – Bihar, Punjab and Haryana.
Hence total number of matches = 2 + 1 (Using method 1)
This is also equal to (n(n1))/2 = (3(31))/2 = 3 matches.
Hence answer to Q1.Total number of matches played in the competition = 3 matches. Hence option (1) is the answer.
SECONDLY,
Total Goals for by all the teams = Total Goals Against all the teams
Now total goals against = 4 + 7 + 1 = 12 goals
This gives us the number of Goals for Haryana = 12 – (2+3) = 7

Match played 
Won 
Drawn 
Lost 
Goals for 
Goals against 
Bihar 
2 

1 

2 
4 
Punjab 
2 



3 
7 
Haryana 
2 



7 
1 
Now, Bihar has drawn one of its matches, so it has either won or lost the other match.
Since it has drawn one of its two matches, possible score for Bihar is:

Match 1 (Draw) 
Match 2 (Lost) 
Hypothesis 
Possibility 1 
00 
24 
Hypothesis 1 
Possibility 2 
11 
13 
Hypothesis 2 
Possibility 3 
22 
02 
Hypothesis 3 
22 = Goals for 2 and goals against 2.
It can be seen that Bihar is losing its second match.
Testing Hypothesis 1:
Hereafter, we will have to go ahead with hypothesis 1. Using the conditions given, then, we will verify if the assumptions that we have assumed are correct or not.
Assume that Bihar has its match drawn with Punjab and lost its match against Haryana.
Since Punjab and Haryana both have played one match with Bihar at this stage, total number of matches occurred so far = 2. And next match will be between Punjab and Haryana.
Using the score card of Punjab – Goals for 3 and Goals against 7.
Since one of its matches was drawn with Bihar (score 0 – 0), hence score of 2^{nd} match against Haryana would be = 37

Match 1 
Match 2 
Punjab 
00 
37 
Now Finally, we will have to evaluate if the goals for / against obtained in two matches against Haryana (one against Bihar and another against Punjab) support the figure given in the original table given in the question.
Bihar’s score against Haryana = 2 – 4 Þ Score read in favour of Haryana = 4 – 2 (i.e. Haryana scored 4 goals and Bihar scored 2 goals) (1)
Punjab’s score against Haryana = 3 – 7 Þ Score read in favour of Haryana = 7 3 (i.e. Haryana scored 7 goals and Punjab scored 3 goals) (2)
Using the information given above in (1) and (2):
Haryana scored a total of 4 + 7 = 11 goals against these two teams. Looking at the information given in the table, Haryana has scored only 7 goals against both the teams taken together.
So, our hypothesis that Bihar drawn its match against Punjab with 00 is wrong.
Testing Hypothesis 2:
Similarly we will test our 2^{nd} Hypothesis that Bihar drawn its match against Punjab with 11.
Testing Hypothesis 3:
Now checking the hypothesis that Bihar drawn its match against Punjab with score 22.
Using the score card of Punjab – Goals for 3 and Goals against 7.
Since one of its matches was drawn with Bihar (score 0 – 0), hence score of 2^{nd} match against Haryana would be = 37

Match 1 (Drawn with Bihar) 
Match 2 (Lost to Haryana ) 
Punjab 
22 
1—5 
Bihar’s score against Haryana = 0 – 2 Þ Score read in favour of Haryana = 2 – 0 (i.e. Haryana scored 2 goals and Bihar scored 0 goal) (1)
Punjab’s score against Haryana = 1 – 5 Þ Score read in favour of Haryana = 5 1 (i.e. Haryana scored 5 goals and Punjab scored 1 goal) (2)
Using the information given above in (1) and (2):
Haryana scored a total of 5 + 2 = 7 goals against these two teams. Looking at the information given in the table, Haryana has scored 7 goals against both the teams taken together. At the same time, Punjab and Bihar taken together have scored 0 + 1 = 1 goal against Haryana. This also suits the tally given in the table (in original question).
So Hypothesis 3 is correct.
Hence the final table is like:

Match played 
Won 
Drawn 
Lost 
Goals for 
Goals against 
Bihar 
2 
0 
1 
1 
2 
4 
Punjab 
2 
0 
1 
1 
3 
7 
Haryana 
2 
2 
0 
0 
7 
1 
[New findings are in bold and italics].
Now all the questions from Q2 to Q4 can be answered.
Answer Grid:
Q1 
Q2 
Q3 
Q4 
1 
2 
2 
4 
Part2: Logical Reasoning preparation for CAT 2017
CAT Logical Reasoning syllabus covers almost all types of reasoning questions, answers to which could be found by applying natural human instincts and logics. CAT reasoning puzzles are based on the belief that human brain is superior because it has the power to reason. IIMs CAT believes that the human brain can distinguish between right and wrong, can pick out the relevant from the irrelevant and accordingly the logical reasoning puzzles and other types of CAT logical reasoning questions and answers to them in sets are framed to analyse the common reasoning situations which can be cracked only with a regular practice and common human instinct.
CAT has combined logic to reason making it more advanced, more pointing and value added. Logical Reasoning questions in CAT, therefore, become a guide to good decisions by following a systematic thought process. Free download logical reasoning questions with solutions for CAT 2017 are available online and should be practiced well.
Key changes in CAT Logical Reasoning section
Logical Reasoning in CAT, since 2010 to 2014 was clubbed with Verbal Ability section. Till 2013 the Logical Reasoning continued to be a sub part of Verbal Ability and Reading Comprehension section with 10 questions in MCQ format. This pattern continued in CAT logical reasoning part till 2014 with only change that the number of questions in CAT Logical Reasoning increased to 16.
CAT Logical Reasoning section was totally revamped in 2015 when CAT was conducted by IIM Ahmedabad. Logical Reasoning in IIM  Common Admission Test was separated from Verbal Ability section. A new 3^{rd} section in CAT exam was created. New CAT section consisted of Data Interpretation and Logical Reasoning questions only. The new DILR section in CAT has 32 questions. Out of the 32 questions, share of logical reasoning questions in CAT exam is 16 which means that LR in CAT carries individual weight of 50% marks instead of 30 to 33% earlier when LR in CAT was clubbed to Verbal Ability.
Another key change brought by IIMs in CAT Logical Reasoning questions is that it now consists of Objective Multiple Choice Questions (MCQs) as well as NonMCQs.
Division of MCQs and non MCQs in CAT Logical Reasoning questions
CAT Logical reasoning – type of questions 
Number of questions 
MCQs with answer options 
12 
NonMCQs (May or may not be with answer options) 
4 
How to answer CAT Logical reasoning  NonMCQ
For MCQs you simply click on the answer option and click on ‘save & next’, your answer is recorded in CAT exam.
For Non MCQ questions, you are supposed to type in the answer/ answer option in the space provided on the screen using the onscreen keyboard. Accordingly, if you click on the answer option only, your answer for NonMCQ in CAT logical reasoning will not be recorded.
Logical Reasoning in CAT 2017: How to Prepare?
If you can hit 10 LR questions correct in CAT 2017 out of 16 questions, your battle in DILR section in CAT is won to a great extent. There is no dearth of time as well since you have full 60 minutes for 32 questions in DILR questions in CAT– meaning about 2 minutes to answer each question in DILR section in CAT 2017.
Logical Reasoning, if viewed in totality, plays a very important part in CAT. The irony however, is that the aspirants do not prefer preparing it the way they prepare the Quant and Verbal. It might be due to the scattered or undefined syllabus which makes it difficult to systematically organise the study pattern of the aspirants.
In fact, Logical Reasoning in CAT needs less efforts and the questions in this section are based on the natural human instincts, so they can be understood and solved fairly easily, if proper attention is paid to this section. LR in CAT serves as an aid to facilitate your entry to the top Bschools since it improves your percentile with a little logical understanding of the reasoning based questions.
Understand the Vocabulary of CAT Logical Reasoning questions
The vocabulary used in CAT logical reasoning questions is different from the one used in Verbal Ability hence it is imperative that you must have the knowledge of the terminology used in this part, since the questions are formed on the topics based on the said terminology in CAT.
CAT Logical Reasoning topics to prepare
Certain topics on which CAT Logical Reasoning questions are framed have specific logical rules to follow to solve them. It is suggested in the interest of the aspirants to prepare, attempt and practice more and more exercises & Mocks on CAT Logical Reasoning topics. You may also face questions based on such topics which have never been asked so far. Following are the favourite topics of CAT Logical Reasoning questions, prepare them well –
 Seating Arrangements
 Matching puzzles
 Constraint based arrangements
 Blood Relations – family tree
 Syllogism
 Proposition based followed by either deductive or inductive argument.
 Assumptions
 Statements
 Sets
 Binary logic
 Venn Diagrams
 Clocks and calendars
Although topics on CAT Logical Reasoning cannot be restricted to above nor there is any limitation to what should and what shouldn’t appear in CAT 2017 Logical reasoning section, captioned topics, if prepared well, will lead an aspirant to a wellplaced position.
CAT Logical Reasoning : Preparation tips
Practice on diverse sets of LR problems
There are number of topics required to be logically understood, carefully practiced so that you are exposed to all types of problems in CAT logical reasoning section. Once you begin such versatile problem solving methodology, the day will come in a month or so – your hunger for more problems will go on increasing and you will enjoy solving them. The more you practice the more improved will be your expertise in Logical Reasoning questions for CAT.
LR questions in CAT are repetitive: Go through past papers & CAT Mocks
If you view the past CAT papers, you will find LR problems, based on number of topics, repetitively been askedlike seating arrangement, sets, statements etc. Once you select such CAT logical reasoning topics and go on working on them, you will get more ideas to focus on question solving methods, will become more focussed and will develop better strategies with short cuts.
If you really wish to enter the top 3 IIMs, you need to approach every new given problem with some improvement in the problem solving process and should always be in the quest for more and more efficiency combined with speed and accuracy. The time will come when it will be difficult for you to find Very difficult LR questions for CAT to solve on the topics, you have been working.
Solve new LR problems
There may be a few tasks, unique problems – new ones even in the same logical reasoning topic which you might face for the first time. Do not get panicky and maintain your cool – go through it, understand it, find out what exactly is being asked and what should be the methodology to solve the same.
It is quite possible that the similar CAT logical reasoning problem has been put before you in absolutely other manner. It might appear tough but you might have already solved such questions, although a little differently. Understand the logic behind and the test hidden in the LR question. Once you solve it, find out the time spent on it and find out more such logical reasoning problems to practice. Over a period of time, if you are well equipped to solve them in 45 minutes (each problem), rest assured you will emerge as a winner.
Grip over the Logical Reasoning
In most of the cases, candidates, during the process of solving the logical reasoning problem stagger and lose the grip of the test, the question needs to lead to. They begin beating about the bush and waste the time and energy. On the top of it not only do they lose the marks but also call for the penalty – aggravating the loss. It is therefore, advised to develop the skills to understand and realise whether it would be worthwhile to spend so much time to solve the Logical reasoning question in CAT exam which has sectional time constraint also or leave it. It is never advisable to invest your precious time in the examination to go for a futile attempt in solving an undoable question. However, if you have a strong feeling that you can solve it, you may proceed judiciously exercising full control over the problem, even if you may need an additional minute or two of your valuable time.
Solve CAT LR questions with various difficulty levels
The best method to understand and solve CAT Logical Reasoning questions, is to go for LOD=1 to LOD=3. The problem with LR questions is that they look alike and it is always difficult, since similar language is used, to figure out whether the question is doable or not. Try to solve as many questions on all difficulty levels, as possible. Never be shy of practice on LR. Once it is done, you will develop the methodology and will come to know beforehand whether you will be able to solve a particular LR question, when it appears in the examination or should leave that and move ahead.
Sample CAT Logical Reasoning questions & answers
Direction for questions 1 to 4: Read the information given below and solve the questions based on it.
Three children live at houses with different colored doors. Following are the details of the children:
Children Name – Govind, Jai, Sama Door colours – Blue, Green, Red
House Numbers – 1, 2, 3 Roads – Bridge Street, Cherry Road, Sandy Lane
Sama’s house no. is 1 lower than Jai’s. Govind does not live at House No.1, but does not have a green door. One child lives at No.2 at Cherry Road. House No.1 has a red door, but is not on Sandy lane.
Q1. Who lives at Bridge street?
(a) Govind (b) Jai
(c) Sama (d) More than one answer is possible
Q2. Which of the following is correctly matched door color and house number?
(a) Blue – House no. 1 (b) Blue – House no. 2
(c ) Red  House no. 1 (d) Red  House no. 2
Q3. Which of the following is the correct combination for Govind?
(a) Govind – Green – 2 – Cherry Road (b) Govind –Green– 3– Sandy Lane
(c) Govind – Blue – 2 – Cherry Road (d) Govind –Blue– 3 – Sandy Lane
Q4. For how many children, is it possible to exactly determine the house number, road and
color of road?
(a) 0 (b) 1 (c) 2 (d)3
Answers
Q1 
Q2 
Q3 
Q4 
Q5 
Q6 
Q7 
Q8 
c 
B 
b 
d 
A 
b 
a 
b 
Explanation
Solutions and Explanations:
Solution to Questions 1 – 4:
Following is the arrangement:
Child 
Color of Door 
House Number 
Road 
Govind 
Green 
3 
Sandy lane 
Jai 
Blue 
2 
Cherry Road 
Sama 
Red 
1 
Bridge Street 
Q1. Sama lives as Bridge Street. Hence option (c) is the answer.
Q2. House number 2 has blue colored door. Hence option (b) is the answer.
Q3. It can be seen from the table that option (b) is the answer.
Q4. As obvious from the above table, it can be determined for all three of them. Hence option (d) is the answer.