Question

Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

• A. GM-QY
• B. LR-VD
• C. OU-YG
• D. NT-EF

Answer 1

Answer:

D. NT-EF

The letter-cluster pair NT-EF is the odd one out.

The other three letter-cluster pairs share a consistent logic based on the positions of the letters in the English alphabet:

* First Letter to Third Letter: +10 positions

* Second Letter to Fourth Letter: +12 positions

* GM-QY:

* G (7) + 10 = Q (17)

* M (13) + 12 = Y (25)

* LR-VD:

* L (12) + 10 = V (22)

* R (18) + 12 = D (4, or 30 after wrapping around)

* OU-YG:

* O (15) + 10 = Y (25)

* U (21) + 12 = G (7, or 33 after wrapping around)

NT-EF does not follow this rule, as N (14) + 10 would be X, not E.