PPT: Coding-Decoding | Logical Reasoning for Judiciary Exam - Judiciary Exams PDF Download

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Coding and 
Decoding
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Coding and 
Decoding
What is 'Coding-Decoding'?
Encryption
Coding is a method of 
transmitting data between 
sender and receiver in an 
encrypted manner, 
preventing unauthorised 
access to the information 
during transmission.
Protection
The process diligently helps 
protect sensitive confidential 
information from being 
corrupted or leaked, ensuring 
data integrity throughout the 
entire communication 
channel.
Decryption
Once encrypted data reaches its destination, the receiver decodes 
it according to pre-established rules to obtain the original 
information in its unaltered form.
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Coding and 
Decoding
What is 'Coding-Decoding'?
Encryption
Coding is a method of 
transmitting data between 
sender and receiver in an 
encrypted manner, 
preventing unauthorised 
access to the information 
during transmission.
Protection
The process diligently helps 
protect sensitive confidential 
information from being 
corrupted or leaked, ensuring 
data integrity throughout the 
entire communication 
channel.
Decryption
Once encrypted data reaches its destination, the receiver decodes 
it according to pre-established rules to obtain the original 
information in its unaltered form.
Types of Coding Decoding Questions
1
Letter Coding
Type replaces alphabets in 
word with others by 
specific rules. Success 
requires knowing 
positional values of 
alphabetical letters in 
forward and backward 
order.
2
Substitution Coding
These questions involve 
replacing words with 
different words according 
to a given pattern. Careful 
tracking of the 
substitution chain is 
essential to arrive at the 
correct solution.
3
Mixed Letter Coding
This type presents 
phrases in coded language 
where you must skillfully 
identify the code for a 
specific word by finding 
common elements across 
multiple complex coded 
phrases.
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Coding and 
Decoding
What is 'Coding-Decoding'?
Encryption
Coding is a method of 
transmitting data between 
sender and receiver in an 
encrypted manner, 
preventing unauthorised 
access to the information 
during transmission.
Protection
The process diligently helps 
protect sensitive confidential 
information from being 
corrupted or leaked, ensuring 
data integrity throughout the 
entire communication 
channel.
Decryption
Once encrypted data reaches its destination, the receiver decodes 
it according to pre-established rules to obtain the original 
information in its unaltered form.
Types of Coding Decoding Questions
1
Letter Coding
Type replaces alphabets in 
word with others by 
specific rules. Success 
requires knowing 
positional values of 
alphabetical letters in 
forward and backward 
order.
2
Substitution Coding
These questions involve 
replacing words with 
different words according 
to a given pattern. Careful 
tracking of the 
substitution chain is 
essential to arrive at the 
correct solution.
3
Mixed Letter Coding
This type presents 
phrases in coded language 
where you must skillfully 
identify the code for a 
specific word by finding 
common elements across 
multiple complex coded 
phrases.
Letter Coding: Solving Techniques
Backward Direction 
Values
Understanding the positional 
values of alphabets in reverse 
order (Z=1, Y=2, etc.) is crucial 
for many letter coding 
questions. Memorising these 
positions saves valuable time 
during exams.
Pattern Recognition
Analyze the pattern by 
comparing corresponding 
letters in the original word and 
its code. Look for consistent 
shifts in alphabet positions, 
such as +2/-2 alternating 
pattern shown in the PARKING 
³ RYTIKLI example.
Sample Solution
In the example where 
"PARKING" becomes 
"RYTIKLI" through alternating 
+2/-2 shifts, we can apply the 
same pattern to decode 
"FLOWERS" as "HJQUHPQ" by 
systematically applying the 
alternating shifts to each letter.
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Coding and 
Decoding
What is 'Coding-Decoding'?
Encryption
Coding is a method of 
transmitting data between 
sender and receiver in an 
encrypted manner, 
preventing unauthorised 
access to the information 
during transmission.
Protection
The process diligently helps 
protect sensitive confidential 
information from being 
corrupted or leaked, ensuring 
data integrity throughout the 
entire communication 
channel.
Decryption
Once encrypted data reaches its destination, the receiver decodes 
it according to pre-established rules to obtain the original 
information in its unaltered form.
Types of Coding Decoding Questions
1
Letter Coding
Type replaces alphabets in 
word with others by 
specific rules. Success 
requires knowing 
positional values of 
alphabetical letters in 
forward and backward 
order.
2
Substitution Coding
These questions involve 
replacing words with 
different words according 
to a given pattern. Careful 
tracking of the 
substitution chain is 
essential to arrive at the 
correct solution.
3
Mixed Letter Coding
This type presents 
phrases in coded language 
where you must skillfully 
identify the code for a 
specific word by finding 
common elements across 
multiple complex coded 
phrases.
Letter Coding: Solving Techniques
Backward Direction 
Values
Understanding the positional 
values of alphabets in reverse 
order (Z=1, Y=2, etc.) is crucial 
for many letter coding 
questions. Memorising these 
positions saves valuable time 
during exams.
Pattern Recognition
Analyze the pattern by 
comparing corresponding 
letters in the original word and 
its code. Look for consistent 
shifts in alphabet positions, 
such as +2/-2 alternating 
pattern shown in the PARKING 
³ RYTIKLI example.
Sample Solution
In the example where 
"PARKING" becomes 
"RYTIKLI" through alternating 
+2/-2 shifts, we can apply the 
same pattern to decode 
"FLOWERS" as "HJQUHPQ" by 
systematically applying the 
alternating shifts to each letter.
Substitution Coding
1
Original Word
Start with the word you need to decode. In the example, we need to find the national bird, 
which we know is the peacock.
2
Substitution Chain
Trace through the substitution sequence carefully. In the example, we see that 'Parrot' is 
known as 'Peacock' , 'Peacock' is known as 'Swallow' , and so on.
3
Final Decode
Identify the correct substitution. Since 'Peacock' is coded as 'Swallow' in the example, the 
national bird would be referred to as 'Swallow' in the coded language.