Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. PQR, STU,…

Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

PQR, STU, VWX, ?

1. A. YZD
2. B. YVA
3. C. YZA (Correct answer)
4. D. DFR

Correct Answer

Option C — YZA

Detailed Solution & Explanation

The correct answer is YZA.

Key Points

• Each cluster is simply the next three consecutive letters of the alphabet:
  • PQR, then STU, then VWX
• Continuing, the next three after X are Y, Z and then the alphabet wraps to A.
• That gives YZA.

Additional Information

• Wrapping past Z back to A is the single most common source of error in letter series; treat the alphabet as a closed loop and subtract 26 whenever a position exceeds it.
• The distractors are built from that very slip: YZD skips two letters, and YVA moves backwards in the middle position.
• Where a series simply runs through the alphabet in blocks, check whether the blocks are consecutive or whether letters are being skipped between them — both patterns appear regularly.

प्रश्न (हिन्दी में)

दिए गए विकल्पों में से उस अक्षर-समूह का चयन करें जो निम्नलिखित श्रृंखला में प्रश्न चिह्न (?) को प्रतिस्थापित कर सके।

PQR, STU, VWX, ?

1. A. YZD
2. B. YVA
3. C. YZA
4. D. DFR