Three of the following four letter groups are alike in a certain way and one is different. Choose the odd one out.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → QSRU
Write each letter's place in the alphabet (A = 1, B = 2, …, Z = 26) and find the jumps from one letter to the next.
Option (1) DFEG — D (4), F (6), E (5), G (7): jumps +2, −1, +2.
Option (2) BDCE — B (2), D (4), C (3), E (5): jumps +2, −1, +2.
Option (3) QSRU — Q (17), S (19), R (18), U (21): jumps +2, −1, +3.
Option (4) NPOQ — N (14), P (16), O (15), Q (17): jumps +2, −1, +2.
Three groups follow +2, −1, +2; QSRU ends with +3, so QSRU is the odd one out.