If RAYMOND is written as 2795431 and OLD as 461, how will DALMO be written ?
17654
Understanding the Coding Decoding Pattern
This question is an example of letter coding or direct substitution coding. In this type of coding, each letter in a word is assigned a specific code, which can be another letter, a number, or a symbol. The same code is used consistently for the same letter throughout the problem. To solve this, we need to identify the code assigned to each letter from the given examples.
Analyzing the Given Codes
We are given two examples:
- RAYMOND is written as 2795431.
- OLD is written as 461.
Let's use these examples to deduce the code for each letter present:
From RAYMOND = 2795431:
By comparing the letters and their corresponding digits based on their position, we can establish the following mapping:
- R corresponds to 2
- A corresponds to 7
- Y corresponds to 9
- M corresponds to 5
- O corresponds to 4
- N corresponds to 3
- D corresponds to 1
From OLD = 461:
Let's check if these mappings are consistent and find codes for any new letters:
- O corresponds to 4 (This matches the mapping found from RAYMOND).
- L corresponds to 6
- D corresponds to 1 (This matches the mapping found from RAYMOND).
The mappings are consistent across both examples.
Consolidated Letter-Digit Mapping
Based on the analysis, we have the following code assigned to each letter:
| Letter | Code |
|---|---|
| R | 2 |
| A | 7 |
| Y | 9 |
| M | 5 |
| O | 4 |
| N | 3 |
| D | 1 |
| L | 6 |
Decoding the Word DALMO
Now we need to find the code for the word DALMO using the mapping we derived. Let's take each letter of DALMO and find its corresponding digit:
- D corresponds to 1
- A corresponds to 7
- L corresponds to 6
- M corresponds to 5
- O corresponds to 4
Arranging these digits in the order of the letters in DALMO (D-A-L-M-O), we get: 17654.
Checking the Options
Let's compare our derived code 17654 with the given options:
- Option 1: 15764
- Option 2: 15476
- Option 3: 17654
- Option 4: 17653
Our calculated code 17654 matches Option 3.
Conclusion
Following the direct substitution pattern observed in the examples RAYMOND=2795431 and OLD=461, the word DALMO is coded as 17654.
Revision Table: Coding Decoding Key Concepts
| Concept | Description |
|---|---|
| Letter Coding | Replacing letters of a word with other letters, numbers, or symbols based on a specific rule. |
| Direct Substitution | Each letter is directly assigned a unique code (usually another letter or number) based on the examples provided. The position of the letter matters for its code in the word, but the letter's code itself is fixed. |
| Decoding | The process of converting the coded form back into the original word or number using the established rule. |
Additional Information: Types of Coding Decoding
Coding and decoding questions are common in logical reasoning sections of competitive exams. Besides direct substitution, other types include:
- Letter Shifting/Positional Coding: Letters are shifted a certain number of positions forward or backward in the alphabet (e.g., A becomes C, B becomes D, shifting by +2).
- Mixed Letter and Number Coding: A combination of letter codes and number codes might be used based on specific rules (e.g., position in alphabet, number of vowels/consonants).
- Symbol Coding: Letters are replaced by symbols.
- Word Coding: Entire words are coded as other words based on a relationship or pattern.
- Sentence Coding: Complete sentences are coded based on rules applied to words or phrases.
Solving coding decoding problems requires careful observation of the given examples to identify the underlying rule or pattern.
Important Questions from Coding Letters of a Word
In a certain code language, 'RAKHI' is coded as 36 - 2 - 22 - 16 - 18 and 'SHALU' is coded as 38 - 16 - 2 - 24 - 42. How will 'MANJU' be coded in that language?
- In a certain code language, ‘FILE’ is coded as 8357 and ‘SINK’ is coded as 9364. How will ‘NIKE’ be coded in that language?
In a code language, if PEN is written as 17717, then how will CAP be written in the same language?
In a certain code language, 'GANGA' is coded as 21-3-42-21-3 and 'KOSHI' is coded as 33-45-57-24-27. How will 'GOMTI' be coded in that language?
In a certain code language, 'LOAD' is coded as '27241613' and 'CLEAN' is coded as '2725231614'. How will 'STRIKE' be coded in that language?
