Find next term of the series A5A, C10C, E15E, E20G ______.
Options
AI25I
BI20I
CJ25J
DK20K
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Number Series, Coding and DecodingMCQMTP June 24 Series IQuestion 2074 of 217
All Questions Correct Answer
✅ Option a — I25I
All Options:
- AI25I
- BI20I
- CJ25J
- DK20K
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Detailed Solution & Explanation
To find the next term of the series :
Let us analyze the three components of each term (first letter, central number, and last letter):
1. **First Letter Progression:**
- Letters:
- Alphabetical positions:
- The pattern is an increase of at each step. Thus, the 5th term should start with the 9th letter, which is **I**.
*Note:* The 4th term's first letter is printed as (in ), which is a typographical error for in the question paper.
2. **Central Number Progression:**
- Numbers:
- This is a simple arithmetic progression increasing by . Thus, the next number is:
3. **Last Letter Progression:**
- Letters:
- Alphabetical positions:
- This also increases by at each step. The next letter (9th position) is **I**.
Combining the three components, the next term is **I25I**.
Hence, **Option A** is the correct answer.
Let us analyze the three components of each term (first letter, central number, and last letter):
1. **First Letter Progression:**
- Letters:
- Alphabetical positions:
- The pattern is an increase of at each step. Thus, the 5th term should start with the 9th letter, which is **I**.
*Note:* The 4th term's first letter is printed as (in ), which is a typographical error for in the question paper.
2. **Central Number Progression:**
- Numbers:
- This is a simple arithmetic progression increasing by . Thus, the next number is:
3. **Last Letter Progression:**
- Letters:
- Alphabetical positions:
- This also increases by at each step. The next letter (9th position) is **I**.
Combining the three components, the next term is **I25I**.
Hence, **Option A** 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 SyllabusExam Strategy Tip
This topic carries 5 Marks weightage. Focus on understanding core concepts rather than memorizing.
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