Find the odd one from the given options which is different from others.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → T-F
Option (1) P-K — P is 16th and K is 11th; \(16+11=27\), so K is the opposite letter of P (A-Z, B-Y, …).
Option (2) T-F — T is 20th and F is 6th; \(20+6=26\), not 27. The opposite letter of T is G, so T-F is the odd one out.
Option (3) O-L — O is 15th and L is 12th; \(15+12=27\), an opposite pair.
Option (4) R-I — R is 18th and I is 9th; \(18+9=27\), an opposite pair.
Tip: Two letters are opposite letters of the alphabet when their positions add up to 27.