Coding and Decoding for Reasoning

 Coding and Decoding for Reasoning 

Coding means to conceal the significance of any message and translating means to figure out the genuine importance of that message.

Coding is a strategy for communicating a message between the source and the recipient that no third individual can grasp it. The coding and unraveling one's capacity of translating the standard and figuring out the code to interpret the message will be tried to be aware.

Approach:

• Notice letter sets or numbers given in the code acutely.
• To determine whether it is ascending or descending, find the order it follows.
• Find the pattern that the letters, numerals, and words follow.
• Insert the proper letter, number, or word into the provided blank.

In coding-decoding questions, a word or sentence is coded in a specific way, and the applicants are then asked to decode the word or sentence or code another word or sentence in the same way.

Candidates must comprehend the rule that was used to code a certain word or message in order to correctly answer these questions.

Letter positions in the English alphabet

The placements of all the letters of the English alphabet, both in forward and backward order, must be remembered because sometimes a word or a sentence is coded by shifting the positions of English Alphabet letters in accordance with a specific pattern.

               

Forward Order Position		Letters		Backward Order Position
7		G		20
8		H		19
9		I		18
10		J		17
11		K		16
12		L		15
13		M		14
14		N		13
15		O		12
16		P		11
17		Q		10
18		R		9
19		S		8
20		T		7
21		U		6
22		V		5
23		W		4
24		X		3
25		Y		2
26		Z		1

Letter coding: 

To determine a word's code, certain letters in the word are swapped out for others in accordance with a predetermined rule. Therefore, the common rule should be discovered first. Here are a few instances:

1)‘ZYXW’ as coded as ‘ABCD’ then ‘STUV’ is coded as...........

Answer:Z – A, Y– B, X – C, W – D V – E, U – F, T – G, S – H STUV = HGFE Answer = HGFE Rule= front alphabet= back alphabet.

2) ‘ bcd’ is coded as ‘def’ then ‘True’ is coded as..........

Answer:Answer: b – d (+2) c – e (+2) d – f (+2) +2 letters are considered in this code. True – Vtwg Answer = Vtwg.

3) ‘ Hyderabad ’ is coded as ‘Ixedszcze’ then ‘Chennai’ is coded as..............

Answer:H – I (+1) Y – X (1–) D – E (1+) E – D (1-) R – S (1+) A – Z (1–) B – C (1+) A – Z (1– ) D – E (1+) Here if we observe alternatively the letter increasing and one letter decreasing. Chennai =dgfmozj Answer = dgfmozj

Number coding: In this each alphabets or words are assigned to the numeric values we should observe the given letters and the assigned values and use the same rule to find the value to of given code. Some examples are given below:

1)Apple is coded as 25563, Rung is coded as 7148. Then purple is coded as

Answer:PURPLE – 517563 Answer = 517563.

2)In a language A is coded as 1, B is coded as 2, ….. then FACE is coded as

Answer:Then FACE = 6135 Answer = 6135.

3)PUSH is coded as 1234, ROUGH is coded as 65274. Then SOUP is coded as

Answer:SOUP = 3521 Answer = 3521.

categories of Coding and Decoding:-

Type-1: letter/Number Coding:-

We deal with concerns in this style of coding where the letters of a word are changed to other letters or numbers in accordance with a set pattern or rule to create a code. You must identify the coding pattern or rule and respond to the questions posed using that pattern or rule.

Type-2: Direct Coding:-

In direct coding, the letters, numbers, and symbols follow the same pattern as the letters in the text they represent. Essentially, this is a direct substitution technique.

Type-3 : Fictitious language coding

In this case, a coded version of two or more sentences is provided, and you must decode the code to reveal a certain word or message.
Any two messages with a common word or number are selected for analysis in this manner. That specific word or number will be represented by the universal code.

Any two messages with a common word or number are selected for analysis in this manner. That specific word or number will be represented by the universal code.

The complete message may be decrypted and the codes for each individual word and number can be discovered by proceeding similarly and choosing up all conceivable combinations of two.

Sometimes the message supplied lacks a well-known term or number. The words or numerals are independently classified in certain circumstances. You must determine the proper coding scheme and decode the word or message specified in the question.

Type-4 : Substitution coding:-

In this sort of coding, specific words are coded using specific substituted words, and the code for the supplied word is then obtained from the substituted words.