Letter series PQR STU VWX YZA – UGC NET Question

The groups are consecutive three-letter blocks taken in order around the alphabet: PQR (16–18), STU (19–21), VWX (22–24) and YZA (25, 26, 1). After YZA, the next three consecutive letters are B, C and D, starting from the letter after A. Therefore BCD is the immediate next block, and the series continues cyclically.

Option A:
Option A, ABC, restarts at A but overlaps with the last letter of YZA and does not begin with the next letter after A. The pattern continues forward from A to B, not back to A again. Because ABC does not follow the “next-after-A” continuation, it is not consistent with the series.

Option B:
Option B, BCD, is correct because it starts from B, the next letter after A, and forms a three-letter consecutive block. This preserves both the block length and the cyclic progression across the alphabet. The group BCD therefore fits perfectly into the established rotation.

Option C:
Option C, CDE, skips directly to C as the starting letter, ignoring B, which should come immediately after A in the cycle. This breaks the sequence of consecutive letters. Thus CDE does not align with the ordered block structure.

Option D:
Option D, AZB, does not represent the next three consecutive letters after A. It changes the internal order instead of continuing to B, C and D. Consequently, AZB fails to reflect the stepwise nature of the series.