Number Series, Coding and DecodingMCQMTP June 2023 Series IQuestion 2067 of 217
All Questions

Find the next alphabet series in the given sequence? ALN, DNP, GPR?

Options

AKLN
BJRT
CRNL
DRNV
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Correct Answer

✅ Option b — JRT

All Options:

  • AKLN
  • BJRT
  • CRNL
  • DRNV

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Detailed Solution & Explanation

To find the next term in the alphabet sequence ALN,DNP,GPR,?\displaystyle ALN, DNP, GPR, ?, we analyze the alphabetical progression of each of the three letter positions separately (where A=1,B=2,…,Z=26\displaystyle A = 1, B = 2, \dots, Z = 26):

1. **First Letter Progression:**
- A→D→G→?\displaystyle A \to D \to G \to ?
- Alphabetical positions: 1→4→7→?\displaystyle 1 \to 4 \to 7 \to ?
- The pattern is a constant increase of +3\displaystyle +3: 7+3=10\displaystyle 7 + 3 = 10, which corresponds to **J**.

2. **Second Letter Progression:**
- L→N→P→?\displaystyle L \to N \to P \to ?
- Alphabetical positions: 12→14→16→?\displaystyle 12 \to 14 \to 16 \to ?
- The pattern is a constant increase of +2\displaystyle +2: 16+2=18\displaystyle 16 + 2 = 18, which corresponds to **R**.

3. **Third Letter Progression:**
- N→P→R→?\displaystyle N \to P \to R \to ?
- Alphabetical positions: 14→16→18→?\displaystyle 14 \to 16 \to 18 \to ?
- The pattern is a constant increase of +2\displaystyle +2: 18+2=20\displaystyle 18 + 2 = 20, which corresponds to **T**.

Combining the three letter positions, the next term in the sequence is **JRT**.

*Note on Answer Key Discrepancy:* The textbook/exam answer key lists **Option A** (KLN\displaystyle KLN) as the correct answer. However, KLN\displaystyle KLN has no logical alignment with the shifts observed in the sequence, whereas JRT\displaystyle JRT follows a strict, consistent mathematical progression. This represents a typographical error in the official answer key, and the correct option is **Option B**.

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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