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 1
The correct answer is Option (1) → ABDIQ
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) ABDIQ — A (1), B (2), D (4), I (9), Q (17): jumps +1, +2, +5, +8.
Option (2) GHJNV — G (7), H (8), J (10), N (14), V (22): jumps +1, +2, +4, +8.
Option (3) IJLPX — I (9), J (10), L (12), P (16), X (24): jumps +1, +2, +4, +8.
Option (4) KLNRZ — K (11), L (12), N (14), R (18), Z (26): jumps +1, +2, +4, +8.
In three groups the jump doubles each time (+1, +2, +4, +8); ABDIQ has +5 in place of +4, so ABDIQ is the odd one out.