Riya Agarwal is teaching live on Unacademy Plus
Logical Reasoning BASED ON COMPLEX DATA ARRANGEMENTS INTRODUCTION
About Me . I hold a B.E degree in Electronics and Communication Engineering. . CAT, 17. DI & LR-98.29 %ile. I would take you through the Dl & LR lessons for CAT . Not all are born Einstein's but trust me with hard work and dedication we can together make it possible.
Contribution of the topic Total Questions from DI & LR section: 32; All questions were in sets form, wherein each set comprised 4 questions. 16 Questions (i.e., 4 sets) on DI 16 Questions (i.e., 4 sets) on LR Logical Reasoning (LR) .Of the 4 sets on LR, 1 set i.e., 4 questions may be based on Data arrangement. Hence, we can say 25% of LR may be cleared if we thoroughly prepare this topic. . NOTE: This analysis is based on previous year papers.
What is Data Arrangement? . These are Complex arrangements which involves more than two dimensions. . The approach for these problems should be very similar to that of the linear arrangement problems except for the fact that the logical framework for interpreting the problem assumes special significance in this case. A lot of information needs to be comprehended in a complex arrangement problem, and hence, care should be taken to ensure that an appropriate framework which will aid smooth fitting and assimilation of data will be used.
Structure of questions Each Arrangement question typically begins with a paragraph which describes a particular situation and introduces a set of terms. This introduction will give you an idea of what you are expected to do with that particular question. This will be followed by a couple of short statements which will provide the rules or constraints to be applied to the particular terms and situation. There are three types of clues involved in arrangement questions. They are: . Direct clues: In this type, the relationship between two terms will be directly mentioned in the statements. Indirect clues: These are rules which can be converted to direct clues through reasoning, once all the other direct clues are identified. Scenario clues: Once all the direct and indirect clues are incorporated into the logical framework, the rest of the problem can be simplified to two or three scenarios, which on further analysis will lead us to the correct solution.
Key Skills Involved I. Identify the Parameters given. Il. Represent the Parameters in proper tabular form. IlI. Understand the correct order of usage of the clues. IV. Infer information from indirect clues. V. Convert clues from theory to visual clues for better understanding and usage. Also, to avoid wasting any time to read the clues again and again. This helps to not only save time, but also, provides accuracy by minimizing chance of missing out any clue.
EXAMPLE: Study the following information and answer the question[Q.1-5] that follows: (i) Six picture cards P, Q, R, S, T and U are framed in six different colours- blue, green, grey, yellow, red and brown and are arranged from left to right ( not necessarily in the same order). (i) The pictures are of the King, Princess, Queen, Palace, Joker and Prince. (ii) The picture of the palace is in the blue colour frame but is not on card S and Card P which is of the queen is in the brown frame and is placed at the extreme right. (iv) The picture of the princess is neither on card S nor on Card T and is not in the either green or the yellow frame. Card R has a picture of the king in the grey frame and it is fifth from the right and next to the card Q having the picture of the prince.
Solution: (i) Three Parameters: Name Colours Picture Blue Green Grey Yellow Red Brown King Queen Princess Palace Joker Prince Palace BlueS Queen BrownP Princess 6 ss |Greer Yellow King Grey Prince Princess Red (iv) Name Colour Brown Green/ Yellow Grey Yellow/ Green Blue Red Picture Queen Prince King Joker Palace Princess
Q1. If the princess's card is immediately between the cards of the palace and the prince, then at what number is the joker's card from left? (a) fifth (b) second (c) first (d) data inadequate Q2. What is the correct combination of card and frame colour? (a) T-Yellow Q3. The Picture of the joker is in which colour frame? (a) Yellow Q4. The Picture of the Palace is printed on which card? (a) S Q5. If the photo frame of the prince and the joker is interchanged, then the colour of the frame of (b) U-Red (b) Green (b) T (c) Q-Green (c) Blue (c) U (d) Data Inadequate (d) Data Inadequate (d) None of these the Prince is: (a) Green (b) Yellow (c) Blue (d) Data Inadequate
Answer kev: Q1. (c) Q2. (b) Q3. (d) Q4. (b) Q5. (d)