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Question

In a certain code language, ‘CROW’ is coded as ‘6970’ and ‘ORCA’ is coded as ‘7569’. What is the code for ‘W’ in the given code language?  

This question was previously asked in
SSC CGL 2023 (Tier-II) Paper 1 Previous Year Paper (26-Oct-2023) (Shift-1)
The correct answer is

0

Understanding Code Language Patterns

This question involves a coding language where words are represented by sequences of digits. We are given two examples of words and their corresponding codes and asked to find the code for a specific letter.

The given information is:

  • 'CROW' is coded as '6970'
  • 'ORCA' is coded as '7569'

We need to determine the code for the letter 'W'. To solve this, we should look for patterns and common elements in the given words and their codes.

Analyzing the Coded Words

Let's list the letters and their potential positions in the codes:

  • CROW: C (1st), R (2nd), O (3rd), W (4th) correspond to 6, 9, 7, 0 in some order.
  • ORCA: O (1st), R (2nd), C (3rd), A (4th) correspond to 7, 5, 6, 9 in some order.

Notice that the same letters appear in different positions in the two words, but their codes might be consistent regardless of position. Let's compare the letters and the digits available:

Word Letters Code Digits
CROW C, R, O, W 6970 6, 9, 7, 0
ORCA O, R, C, A 7569 7, 5, 6, 9

Identifying Common Letter Codes

We can see which letters are common to both words and try to match them with common digits in their codes. The letters common to 'CROW' and 'ORCA' are 'C', 'R', and 'O'. The digits present in both codes '6970' and '7569' are '6', '9', and '7'.

Let's try to match the common letters with the common digits:

  • Letter 'C' appears in CROW and ORCA. The digit '6' appears in both codes. In CROW (6970), C is the first letter and 6 is the first digit. In ORCA (7569), C is the third letter and 6 is the third digit. This strongly suggests that 'C' codes to '6'.
  • Letter 'O' appears in CROW and ORCA. The digit '7' appears in both codes. In CROW (6970), O is the third letter and 7 is the third digit. In ORCA (7569), O is the first letter and 7 is the first digit. This strongly suggests that 'O' codes to '7'.
  • Letter 'R' appears in CROW and ORCA. The digit '9' appears in both codes. In CROW (6970), R is the second letter and 9 is the second digit. In ORCA (7569), R is the fourth digit. This does not fit a simple positional mapping, but the digit '9' is common for the common letter 'R'. This suggests 'R' codes to '9'.

Deducing Individual Letter Codes

Based on the analysis of common letters and digits, we can propose the following potential mappings:

  • C <-> 6
  • O <-> 7
  • R <-> 9

Now let's apply these mappings to the full codes and find the codes for the remaining letters.

For 'CROW' (6970):

  • C is 6.
  • R is 9.
  • O is 7.
  • The code is 6970. The digits used are 6, 9, 7. The remaining digit is 0. The remaining letter is 'W'. This implies W <-> 0.

For 'ORCA' (7569):

  • O is 7.
  • R is 9.
  • C is 6.
  • The code is 7569. The digits used are 7, 9, 6. The remaining digit is 5. The remaining letter is 'A'. This implies A <-> 5.

Verifying the Letter Codes

We have derived the following potential code mapping for each letter:

Letter Code
C 6
R 9
O 7
W 0
A 5

Let's check if these codes produce the given word codes:

  • CROW: C(6) R(9) O(7) W(0) → 6970 (Matches the given code)
  • ORCA: O(7) R(9) C(6) A(5) → 7569 (Matches the given code)

The derived letter codes are consistent with the given information.

Finding the Code for 'W'

The question asks for the code for 'W'. From our verified mapping, the code for 'W' is 0.

Conclusion

By analyzing the given coded words and identifying common letters and their corresponding digits, we deduced the unique code for each letter present in the words. The code determined for the letter 'W' is 0.

Revision Table: Code Language Analysis

Step Action Result
1 List given words and codes CROW=6970, ORCA=7569
2 Identify common letters C, R, O
3 Identify common digits in codes 6, 9, 7
4 Map common letters to digits C<->6, O<->7, R<->9 (based on consistency)
5 Deduce remaining codes (from CROW) W <-> 0
6 Deduce remaining codes (from ORCA) A <-> 5
7 Verify full mapping Consistent with given codes
8 Find code for 'W' 0

Additional Information: Letter Coding Principles

Coding language problems often involve different types of patterns. Some common principles include:

  • Direct Mapping: Each letter has a unique, fixed code (like in this problem).
  • Positional Mapping: The code for a letter depends on its position in the word.
  • Alphabetical Position: Letters are coded based on their order in the alphabet (A=1, B=2, etc.) or a modified sequence.
  • Reversal: The code might be the reverse of the letter sequence or its numerical value.
  • Arithmetic Operations: Codes might involve adding, subtracting, multiplying, or dividing values derived from letter positions.
  • Substitution Ciphers: Each letter is replaced by another letter, number, or symbol.

Solving these problems usually requires careful observation, comparison, and logical deduction to identify the specific pattern used.

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