AZ, GT, MN, \_\_\_\_\_\_, YB, EV. The value of blank spaces (\_\_\_\_\_\_) will be:
Options
ASH
BJH
CSK
DTS
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Number Series, Coding and DecodingMCQPYQ Sep 24Question 2037 of 217
All Questions Correct Answer
✅ Option a — SH
All Options:
- ASH
- BJH
- CSK
- DTS
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Detailed Solution & Explanation
We are given the sequence of letter pairs: AZ, GT, MN, ______, YB, EV.
Let's analyze each pair:
- Each pair consists of letters that are opposites in the alphabet (their alphabetic positions sum to ):
- A (1) + Z (26) = 27
- G (7) + T (20) = 27
- M (13) + N (14) = 27
- Y (25) + B (2) = 27
- E (5) + V (22) = 27
Let's examine the first letter of each pair in the sequence: A, G, M, ?, Y, E.
- Let's write down their alphabetic positions: A (1), G (7), M (13), ?, Y (25), E (31 or 5).
- We observe a constant difference of between the positions:
- (G)
- (M)
- (S)
- (Y)
- (E)
So the first letter of the missing pair is **S** (19).
The opposite letter to S is **H** (since , which is H).
Therefore, the missing term is **SH**.
Hence, **Option A** is the correct answer.
Let's analyze each pair:
- Each pair consists of letters that are opposites in the alphabet (their alphabetic positions sum to ):
- A (1) + Z (26) = 27
- G (7) + T (20) = 27
- M (13) + N (14) = 27
- Y (25) + B (2) = 27
- E (5) + V (22) = 27
Let's examine the first letter of each pair in the sequence: A, G, M, ?, Y, E.
- Let's write down their alphabetic positions: A (1), G (7), M (13), ?, Y (25), E (31 or 5).
- We observe a constant difference of between the positions:
- (G)
- (M)
- (S)
- (Y)
- (E)
So the first letter of the missing pair is **S** (19).
The opposite letter to S is **H** (since , which is H).
Therefore, the missing term is **SH**.
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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