Number Series, Coding, Odd Man OutPYQ June 24Question 2173 of 217
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In a series of letters, which one is the odd one out: BDFH, JLNP, RTVX, ZBDE?

Options

ABDFH
BJLNP
CRTVX
DZBDE
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Correct Answer

✅ Option d — ZBDE

All Options:

  • ABDFH
  • BJLNP
  • CRTVX
  • DZBDE

Detailed Solution & Explanation

Let's examine the alphabetical spacing between letters in each option:
- **BDFH**: B→+2D→+2F→+2H\displaystyle \text{B} \xrightarrow{+2} \text{D} \xrightarrow{+2} \text{F} \xrightarrow{+2} \text{H} (even letter positions: 2,4,6,8\displaystyle 2, 4, 6, 8)
- **JLNP**: J→+2L→+2N→+2P\displaystyle \text{J} \xrightarrow{+2} \text{L} \xrightarrow{+2} \text{N} \xrightarrow{+2} \text{P} (even letter positions: 10,12,14,16\displaystyle 10, 12, 14, 16)
- **RTVX**: R→+2T→+2V→+2X\displaystyle \text{R} \xrightarrow{+2} \text{T} \xrightarrow{+2} \text{V} \xrightarrow{+2} \text{X} (even letter positions: 18,20,22,24\displaystyle 18, 20, 22, 24)
- **ZBDE**: Z→+2B→+2D→+1E\displaystyle \text{Z} \xrightarrow{+2} \text{B} \xrightarrow{+2} \text{D} \xrightarrow{+1} \text{E} (letter positions: 26,2,4,5\displaystyle 26, 2, 4, 5)

All groups except **ZBDE** have a constant alphabetical step gap of +2\displaystyle +2 between successive letters. Therefore, **ZBDE** is the odd one out.

Hence, **Option D** is the correct answer.

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