Understanding Coding Decoding Puzzles

Coding-decoding questions test your ability to identify patterns and rules in how words or numbers are transformed into a coded form. Once the rule is found, you apply it to a new word or number to find its code or decode a given code.

In this specific problem, we are given a word, 'FAMILY', and its code, 'QXBJSD'. Our goal is to determine the rule or pattern that links 'FAMILY' to 'QXBJSD' and then use that same rule to find the code for the word 'FILMY'.

Analyzing the Given Code: FAMILY to QXBJSD

Let's compare the letters of the original word 'FAMILY' with the letters of the code 'QXBJSD' based on their positions:

Observing the table, it appears that the coding is a simple letter-to-letter substitution based on the position of the letters in the given example. The first letter of 'FAMILY' (F) is coded as the first letter of 'QXBJSD' (Q), the second letter (A) is coded as the second letter (X), and so on.

Establishing the Letter Mapping

From the analysis above, we can establish the following mapping for each letter present in 'FAMILY':

• F → Q
• A → X
• M → B
• I → J
• L → S
• Y → D

Coding the Word 'FILMY'

Now we need to apply this established mapping to the word 'FILMY'. Let's take each letter of 'FILMY' and find its corresponding code using the mapping derived from 'FAMILY' → 'QXBJSD'.

The letters in 'FILMY' are F, I, L, M, and Y. All these letters are present in the word 'FAMILY', so we can directly use our mapping.

• The first letter of 'FILMY' is F. According to our mapping, F is coded as Q.
• The second letter is I. According to our mapping, I is coded as J.
• The third letter is L. According to our mapping, L is coded as S.
• The fourth letter is M. According to our mapping, M is coded as B.
• The fifth letter is Y. According to our mapping, Y is coded as D.

Combining the coded letters in order, the code for 'FILMY' is Q J S B D.

Comparing with Options

Let's compare our derived code 'QJSBD' with the given options:

• Option 1: QXBSD
• Option 2: QDSBX
• Option 3: QBJSD
• Option 4: QJSBD

Our calculated code 'QJSBD' exactly matches Option 4.

Revision Table: Coding Decoding Key Points

Additional Information: Types of Coding Decoding

Coding-decoding questions are common in logical reasoning sections of competitive exams. They can involve various patterns:

• Letter Coding: Letters are replaced by other letters, numbers, or symbols based on rules like shifting positions in the alphabet, reversing order, or substitution. This problem is an example of substitution-based letter coding.
• Number Coding: Words are coded into numbers, or sequences of numbers are coded. Rules can involve letter positions in the alphabet, sum of letter positions, or other mathematical operations.
• Symbol Coding: Letters or words are coded using symbols.
• Mixed Coding: A mix of letter, number, and symbol coding within the same question or set of questions. Often presented as a set of sentences and their codes to decipher common words.

Solving these questions requires careful observation, pattern identification, and systematic application of the derived rule.