Introduction to Coding and Decoding
A code is essentially a system of signals or symbols used to transmit messages in a way that ensures confidentiality between the sender and receiver. Coding and decoding tests evaluate a person’s ability to interpret these signals by deciphering the coded message or creating a code for a given word or sentence.
This guide will break down various types of coding and decoding problems, provide examples, and suggest strategies to tackle them with ease.
Codes Based on the English Alphabet
When dealing with alphabet-based codes, the following numerical table is useful:
Alphabet | Position | Alphabet | Position | Alphabet | Position |
---|---|---|---|---|---|
A | 1 | J | 10 | S | 19 |
B | 2 | K | 11 | T | 20 |
C | 3 | L | 12 | U | 21 |
D | 4 | M | 13 | V | 22 |
E | 5 | N | 14 | W | 23 |
F | 6 | O | 15 | X | 24 |
G | 7 | P | 16 | Y | 25 |
H | 8 | Q | 17 | Z | 26 |
I | 9 | R | 18 |
Types of Coding and Decoding Questions
Case 1: Forming a Code for a Word (Coding)
Example:
Case 2: Decoding a Given Code
Example:
In substitution coding, words are replaced with other words.
Example:
Example:
What is the code for ‘sun’ and ‘brightly’?
Answer: lo (sun) and ba (brightly).
Example:
Analogy questions involve identifying relationships between words, letters, or numbers.
Example 1:
Example 2:
Conclusion
Mastering coding and decoding questions requires familiarity with various types of problems and consistent practice. Utilize the strategies and examples outlined in this guide to improve your speed and accuracy. Incorporate the suggested visuals, such as flowcharts, tables, and diagrams, to better understand and retain the concepts.