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 4
The correct answer is Option (4) → QRJJ
Write each letter’s place in the alphabet and add the first and fourth letters, then the second and third letters. Two letters whose places add up to 27 are opposite letters (A–Z, B–Y, …).
Option (1) XDWC — X (24) + C (3) = 27 and D (4) + W (23) = 27: both pairs opposite.
Option (2) QXCJ — Q (17) + J (10) = 27 and X (24) + C (3) = 27: both pairs opposite.
Option (3) TMNG — T (20) + G (7) = 27 and M (13) + N (14) = 27: both pairs opposite.
Option (4) QRJJ — Q (17) + J (10) = 27 and R (18) + J (10) = 28: the middle letters are not opposite.
In three groups the outer letters and the middle letters are opposite letters; QRJJ fails for R and J, so QRJJ is the odd one out.