Data Interpretation > Coding, Decoding and Relationships

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Free Online Preparation for CAT with Minglebox e-CAT Prep. Cover basic concepts of Coding, Decoding, Relationships under Data Interpretation for MBA Entrance Exam Preparation with Study material, solved examples and tests prepared by CAT coaching experts.

 

Problems based on coding generally a pattern which could be either between a set of numbers or set of numbers or set of alphabets etc. We illustrate this more by considering examples on possible coding schemes.

Series having a constant difference between any two consecutive terms find the next term of the series 5,7,9 ....... Answer is 11 as difference between 7 and 5 is 2 and so is the difference between 9 and 7 hence next terms should difference from the previous term by 2.

 

Series of power of numbers

 

Example

Find the next term in the series 4, 9, 16, 25, ............ here the first term is , next is etc. hence next term should be .

 

Letter Series

 

If this type of coding scheme, the pattern is generated by skipping a few alphabets in the alphabetical series , at a regular internal.

Example

Find the next term of the series

A, C, F, K........ Here we skip one alphabet between A and C and then 2 alphabets viz between cdf and then 3 alphabets between f and k viz and z . Hence we will skip alphabets between k and next term viz , and 0 to get p as the answer.

 

Coding using position number of alphabet in the alphabetic order. We present the alphabetic and assign number to them as follows

 

A

B

C

D

E

F

G

H

I

J

K

L

M

1

2

3

4

5

6

7

8

9

10

11

12

13

 

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

14

15

16

17

18

19

20

21

22

23

24

25

26

 

Ex: - If 'word' is coded as 2315184 then how will 'simple' be coded as ?

Here we observe 'W' has been replaced by its position code that is by 23 similarly 'O' has been replaced by 15 therefore the word 'SIMPLE' will be coded as

S - 19, I - 9, M - 13, P - 16, C - 12, E - 5

Hence required code 1991316125

 

Relational problems

 

We start by listing the relational names of people

  1. Husband's or wife sister - Sister's-in-law

  2. Sister's husband - Brother's-in-law

  3. Brother-'s wife  Sister-in-law etc.

 

Question

 

 

  1. Brother

  2. Son

  3. Father

  4. Uncle

Solution

 

If X is the brother of Y X is male Y is male or Female

Y is the son of C X is the son of C as X is the brother of Y

C is the uncle of D X is the son of D as X is son of C

Hence answer is option (2)

 

Question

 

 

If x is the brother of Y , Y is the son of C and C is the wife of D , then how is A related to D ?

Summan told Ram - your father's wife's brother is my father's, how is Ram related to Summan ?

Solution

 

Ram father's wife is Ram's mother and brother of Ram's uncle . Therefore Summan is Ram's uncle's daughter will be Ram's cousin.

 

Question

 

If 'SQUARE' is coded as 'QSAVER' then how is 'CIRCLE' codded as

Solution

 

Here we observe SQ has been replaced by QS VA is replaced by VA etc. Hence we are considering 2 letters of the given word at a time and reversing the order . Therefore 'CIRCLE' will be coded as 'ICCREL' .

Refresher Test - Coding, Decoding and Relationships Launch Test Discuss

Practice Test - Coding, Decoding and Relationships Launch Test Discuss
Coding And Decoding - 1 Launch Test Discuss
Coding And Decoding - 2 Launch Test Discuss
Coding And Decoding - 3 Launch Test Discuss
Coding And Decoding - 4 Launch Test Discuss
Coding And Decoding - 5 Launch Test Discuss

Comments Add Comment

garvit15132 : its gr8 nd helping me 2 get my mind set 2 the exams

kalyani33817 : its very interseting

s5011 : goooooooooood 2 solve

uttamchandani : wow.... its really helping me out... thanks to minglebox....

abhishek6938 : its nice

avinash3074 : In the decoding SQUARE question the it should be QSAUER rather than QSAVER

kausik3168 : 'SQUARE'='QSAVER'it should be u and not v change that.....

sive5286 : realy intrested questions.

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vickychauhan2227 : so nice