Number Series, Coding and DecodingMCQMTP Sep 24 Series IIQuestion 2158 of 217
All Questions

In a certain code language, '123' means 'bright little boy', '145' means 'tall big boy' and '637' means 'beautiful little flower'. Which digit in that language means 'bright'?

Options

A1
B2
C3
D4
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Correct Answer

✅ Option b — 2

All Options:

  • A1
  • B2
  • C3
  • D4

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Detailed Solution & Explanation

Let's list the given coded sentences:
1. ′123′  ⟹  ’bright little boy’\displaystyle '123' \implies \text{'bright little boy'}
2. ′145′  ⟹  ’tall big boy’\displaystyle '145' \implies \text{'tall big boy'}
3. ′637′  ⟹  ’beautiful little flower’\displaystyle '637' \implies \text{'beautiful little flower'}

Comparing sentences (1) and (2):
- The common digit is 1\displaystyle 1.
- The common word is 'boy'.
- Therefore, the digit 1\displaystyle 1 represents 'boy'.

Comparing sentences (1) and (3):
- The common digit is 3\displaystyle 3.
- The common word is 'little'.
- Therefore, the digit 3\displaystyle 3 represents 'little'.

Now, examining sentence (1):
- The code is ′123′\displaystyle '123' representing 'bright little boy'.
- Since 1\displaystyle 1 represents 'boy' and 3\displaystyle 3 represents 'little', the remaining digit 2\displaystyle 2 must represent 'bright'.

Hence, **Option B** is the correct answer.

About This Chapter: Number Series, Coding and Decoding

Paper

Paper 3: Quantitative Aptitude

Weightage

5 Marks

Key Topics

Number series, Coding & Decoding, Odd man out

This chapter covers Number series, Coding & Decoding, Odd man out and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.

View Official ICAI Syllabus

Exam Strategy Tip

This topic carries 5 Marks weightage. Focus on understanding core concepts rather than memorizing.

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