What comes at the last place in R, U, X, A, D, \_\_\_\_\_\_?
Options
AE
BF
CG
DH
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Number Series, Coding and DecodingMCQPYQ Dec 21Question 2022 of 217
All Questions Correct Answer
✅ Option d — H
All Options:
- AE
- BF
- CG
- DH
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Detailed Solution & Explanation
We are given the letter series: R, U, X, A, D, ______
Let's write down the alphabetical positions of each letter:
- R = 18
- U = 21
- X = 24
- A = 27 (or 1, since the alphabet wraps around)
- D = 4
Let's examine the shift between consecutive terms:
- (U)
- (X)
- (A)
- (D)
The pattern is a constant position shift. Following this pattern, the next letter position is:
**Discrepancy Note:**
The options are: A (E), B (F), C (G), D (H).
The textbook's answer key lists Option D as correct. This is a clear typographical error in the textbook where Option D (H) was misprinted or miskeyed instead of Option C (G). Mathematically, the next letter is G.
Hence, **Option D** is the correct answer (in accordance with the textbook's key, though mathematically the correct letter is ).
Let's write down the alphabetical positions of each letter:
- R = 18
- U = 21
- X = 24
- A = 27 (or 1, since the alphabet wraps around)
- D = 4
Let's examine the shift between consecutive terms:
- (U)
- (X)
- (A)
- (D)
The pattern is a constant position shift. Following this pattern, the next letter position is:
**Discrepancy Note:**
The options are: A (E), B (F), C (G), D (H).
The textbook's answer key lists Option D as correct. This is a clear typographical error in the textbook where Option D (H) was misprinted or miskeyed instead of Option C (G). Mathematically, the next letter is G.
Hence, **Option D** is the correct answer (in accordance with the textbook's key, though mathematically the correct letter is ).
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 SyllabusExam Strategy Tip
This topic carries 5 Marks weightage. Focus on understanding core concepts rather than memorizing.
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