How to approach Coding and Decoding questions in RRB NTPC exam?

Coding and Decoding is one of the most important topics in the Reasoning section of any competitive exam. Candidates often find this section to be complex. As a result, they avoid attempting these questions. With clear concepts and good preparation, candidates can easily solve Coding and Decoding questions.

In this article, we have explained a faster and better approach to solve coding and decoding questions in the upcoming RRB NTPC 2020 exam.

What are Coding and Decoding?

In this section, candidates have to decode a code given in the question and answer them accordingly. It is one of the most common topics from where questions are asked in almost all competitive exams.

Coding and Decoding questions include Alphabet Coding, Numerical Coding, Symbol-Based Coding, Alphabet-Symbol-Numerical Coding, Values Coding, Substitution Coding, Decipher Coding, etc. Questions for coding and decoding are also combined with other concepts.

How to prepare Coding and Decoding section?

To help candidates prepare Coding and Decoding section, we have provided here a few important tips to approach this section in an effective manner.

• Understand the basic concepts
• You should read the questions carefully and write down the key codes
• Try to decode the coding questions. Similar type of decoding can be applied to various questions
• You should try to simplify the codes by using the elimination method and remove the unnecessary values
• Solve more and more Coding and Decoding questions to enhance your skills
• Attempt mock tests regularly to analyse your performance
• Learn the shortcut tricks of solving questions
• Try to practice different types of Coding and Decoding questions
• Observe the alphabets or numbers given in the Coding and Decoding questions
• Try to find the pattern or sequence
• Figure out the rule followed by the given arrangement of alphabets/numbers/words

Explanation of few Coding and Decoding Questions

Discussed below are the few patterns of Coding and Decoding questions.

Letter coding

In this type of question, the alphabets in a word are replaced by other alphabets according to a specific rule.For eg: In a certain code, “PARKING” is written as “RYTIKLI”. How will FLOWERS be written in that code?

Substitution

In such questions, names or words are substituted with different names or words. You have to carefully trace the substitution to arrive at the correct answer. For eg: If ‘Parrot’ is known as ‘Peacock’, ‘Peacock’ is known as ‘Swallow’, ‘Swallow’ is known as ‘Pigeon’, ‘Pigeon’ is known as ‘Sparrow’, what would be the name of the national bird?

Mixed Letter Coding

In this type of question, three to four phrases are given in coded language and the code for a particular word is asked. To solve such questions, any two phrases with a common word are picked up. The common code word will refer to that word. Proceeding in a similar manner, all possible combinations of two phrases are selected and a common code is picked up.

Mixed Number Coding

In this type of question, numbers are given corresponding to phrases. Selecting two phrases at a time, you have to find out the number code for each word and then arrive at the correct answer.

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