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Coding Decoding Quiz 21

Coding Decoding Questions PDF IBPS PO 2021, NRA CET and SBI PO 2021 | Coding Decoding Quiz No 21 at Smartkeeda

Direction : Study the following question carefully and choose the right answer.
1
If SYSTEM is coded as SYSMET and NEARER as AENRER, then FRACTION will be coded as
» Explain it
A
The letters in the first half and second half of the word are written in the reverse order to obtain the code.
2
In a certain code, CAT is written as SATC and DEAR is written as SEARD. How would SING be written in that code?
» Explain it
C
The first letter of the word is moved to the last position and ‘S’ is placed at the beginning, to form the code.
3
In a certain code, INACTIVE is written as VITCANIE. How is COMPUTER written in that same code?
» Explain it
B
All the letters of the word, except the last letter, are written in a reverse order to obtain the code.
4
In a certain code, TELEPHONE is written as ENOHPELET. How is ALIGATOR written in that code?
» Explain it
A
The letters of the word are written in a reverse order to obtain the code.
5
If POND is coded as RSTL, how is HEAR written in that code?
» Explain it
C
The first, second, third and fourth letters of the word are moved two, four, six and eight letters forward respectively to obtain the code.
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How to solve different kinds of Coding Decoding Questions

Coding Decoding has always been an integral part of Verbal reasoning.  Though level of difficulty has increased over the time but it has always formed around 3-5 questions on an average. Be it SBI PO, SBI Clerk, IBPS PO, IBPS Clerk, IBPS RRB , Railways RRB Group D , ALP, SSC CGL  or SSC CHSL exam, this topic is really important of any other  competitive exams.

First let us know a brief introduction of the topic of the day i.e. ‘Coding-Decoding.’ Coding as the name suggests is to hide something in form of codes which makes it difficult to be understood by everyone. Decoding is nothing but to find out the specific code to understand the real meaning or in easy term decoding is to crack the code so that anybody can understand the message.

Forms of Coding-Decoding-

Coding decoding can be seen in various competitive exams in so many forms, which are discussed below.

1. Direct Coding- Direct coding is the coding where one thing is coded with second thing, second with third and so on and then a commonly known fact is asked about and the answer has to be given thereafter. These type of questions are commonly asked in SSC CHSL, CGL, Railways and SSC of other states also.

Example-

Black is called Red, Red is called Pink, Pink is called Green, Orange is called Purple and Green is called Orange. Then find leaves are of which color?

Answer – Orange.

We know that leaves are of green color, now we will see that green color is called orange color. So the color of leaves should be orange.

2. Letter to Number coding- In this type, a letter is coded in form of a number. For this we consider A as 1 and Z as 26, in this way each letter of English alphabet series is assigned with a number.

These are also frequently asked in Railways NTPC, Group D and ALP exams. These are also seen in SSC CHSL.

Example-

If TO is coded as 35, IS is coded as 28, then what would be the code for ‘AT’?

Answer- 21

The given codes are the sum of the numeral values of the given letters of  a word.

The numeral values of letters are shown in the below table.

For TO, numeral value of T is 20 and that of O is 15, so sum is 35.

Similarly for AT it would become 21.

A 1 N 14
B 2 O 15
C 3 P 16
D 4 Q 17
E 5 R 18
F 6 S 19
G 7 T 20
H 8 U 21
I 9 V 22
J 10 W 23
K 11 X 24
L 12 Y 25
M 13 Z 26
 
3. Letter to Letter coding- In this type of coding decoding a letter is coded against another letter through application of different logics. These logics could be by interchanging the letters within the word or by reversing them or by replacing the letter with another letter.

Example-

If ACTION is coded as NOITCA then what is the code for RUBBER?

Answer- REBBUR

Here first and sixth letter are interchanged, similarly second and fifth and third and fourth letters are interchanged to form the code.

4. Deciphering Message Word coding- In these questions, a special word language is used to create the codes. These are commonly asked in the pre level exams of SBI Clerk, SBI PO, IBPS Clerk and PO and all sort of bank exams.

Example-

In a certain language, man is mortal is coded as “la no mi”, life is myth is coded as “ja ki la”, myth looks mortal is coded as “ca no ja” then how ‘myth is false’ will be coded in that language?

A. ja su no
B. no la ja
C. ki ja de
D. la ja su
E. ca ja ni

The correct answer is option D.

man is mortal - la no mi………….(1)
life is myth - ja ki la………………..(2)
myth looks mortal - ca no ja……(3)

From (1) and (2) we get

is – la (the common word between both statements)

From (2) and (3) we get

myth – ja (the common word between both statements)

su is the code that is not used anywhere, thus it may represent ‘false’.

The code for myth is false is la ja su.

5. Deciphering Message coding- In these questions, each symbol /letter/number signifies a special meaning, which has to be decoded in order to solve the question. These are commonly asked in the mains level exams of SBI Clerk, SBI PO, IBPS Clerk and PO and all sort of bank exams. This is a difficult type of coding which is sometimes hard to crack.”

Example-
‘Luck plays important role’ is coded as “4@E 5#S 4@K 9=T “
‘Belief creates fate always’ is coded as “6$S 4@E 6$F 7&S”

What is the code for “Success”?
On the basis of following explanation ‘Success’ will be coded as 7&S.

Explanation-

1. The digit in the code represents the number of letters in the word.

For example: In word "DIGIT", there are 5 letters, so the code will begin with 5.

2. The symbol in the code is based upon the following table.

No. of letters in the word Symbol
2 ^
3 %
4 @
5 #
6 $
7 &
8 *
9 =

For example: In word "DIGIT" the number of letters are 5, so the middle code would be #.

3. The letter in the code represents the last letter of the given word.

For example: In word "DIGIT" the last letter is T, so the code will end with T.

Hence the code for "DIGIT" is "5#T".

6. Deciphering Message Symbol coding (New Pattern Coding Decoding asked in SBI PO Mains 2021 exam)- As the name suggests, in this type of coding decoding certain special characters or symbols are given with a specific meaning. Then the value against these symbols has to be used as per given instructions to find out the answer. These questions are of the latest pattern that is being asked in the mains of exams like SBI PO, IBPS PO, IBPS Clerk and SBI Clerk.

Example-
@ means either hour hand or minute hand is at 2
+ means either hour hand or minute hand is at 5
? means either hour hand or minute hand is at 3
< means either hour hand or minute hand is at 4
> means either hour hand or minute hand is at 12 
~ means either hour hand or minute hand is at 8
 
Note: If two symbols are given in then by default first symbol is consider as an hour hand and second one is consider as minute hand. And each referred time is  considered as PM. e.g. <~ = 4:40 PM.

Question- Train D which travels at a uniform speed of 10 m/sec leaves Agra for Lucknow at @< and train F travels to Agra from Lucknow and started the journey at @~. The speed of train F is one-third faster than train D. So, at what time both the train meet each other if the distance between Agra and Lucknow is 138 km?

Options:
(A) <~
(B) +<
(C) <@
(D) +?
(E) Data inadequate

Solution:

As given in the question, train D leaves Agra at @< i.e.  at 2:20 and train F leaves Lucknow at ?~ i.e. at 2:40 PM.

So, speed of train D = 10 × 18/5 = 36 km/hr

As the speed of train F is one-third faster than train D, the speed of train F = 36 + (1/3 of 36) = 48 km/hr.

Now, difference between time = 2:20 PM – 2:40 PM = 20 minutes i.e. 1/3 hour.

So at 2:40 PM, train D already covered 36/3 = 12 km.

Thus, the distance between train D and train F is 126 (138 – 12) km now.

Let's assume the trains meet after x hours from 2:40 PM. 

36x + 48x = 126 => x = 126/84

Therefore, x = 1.5 hours or 90 minutes

Thus, the time when both the trains meet each other = 2: 40 PM + 90 minutes = 4:10 PM.

As per the question, we can code 4:10 PM as <@.

Hence option C is correct.

These are some types of Coding Decoding question with their solution that are important to practice for exam point of view. For practicing more high level questions of coding decoding  log on to www.smartkeeda.com