Number Series, Coding and DecodingMCQMTP Sep 24 Series IQuestion 2196 of 217
All Questions

Choose the odd numerical pair group

Options

A34−43\displaystyle 34-43
B55−62\displaystyle 55-62
C62−71\displaystyle 62-71
D83−92\displaystyle 83-92
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Correct Answer

✅ Option b — 55−62\displaystyle 55-62

All Options:

  • A34−43\displaystyle 34-43
  • B55−62\displaystyle 55-62
  • C62−71\displaystyle 62-71
  • D83−92\displaystyle 83-92

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Detailed Solution & Explanation

Let's calculate the absolute difference between the two numbers in each numerical pair:
- **Option A**: ∣43−34∣=9\displaystyle |43 - 34| = 9
- **Option B**: ∣62−55∣=7\displaystyle |62 - 55| = 7
- **Option C**: ∣71−62∣=9\displaystyle |71 - 62| = 9
- **Option D**: ∣92−83∣=9\displaystyle |92 - 83| = 9

All the pairs have an absolute difference of 9\displaystyle 9, except the pair 55−62\displaystyle 55-62 which has an absolute difference of 7\displaystyle 7. Therefore, 55−62\displaystyle 55-62 is the odd numerical pair group.

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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