Number Series, Coding, Odd Man OutPYQ Dec 21Question 2022 of 217
All Questions

What comes at the last place in R, U, X, A, D, \_\_\_\_\_\_?

Options

AE
BF
CG
DH
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Correct Answer

✅ Option d — H

All Options:

  • AE
  • BF
  • CG
  • DH

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:
- 18+3=21\displaystyle 18 + 3 = 21 (U)
- 21+3=24\displaystyle 21 + 3 = 24 (X)
- 24+3=27≡1\displaystyle 24 + 3 = 27 \equiv 1 (A)
- 1+3=4\displaystyle 1 + 3 = 4 (D)
The pattern is a constant +3\displaystyle +3 position shift. Following this pattern, the next letter position is:
4+3=7(which is G)4 + 3 = 7 \quad (\text{which is } G)

**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 G\displaystyle G).

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