Odd Man Out

In all other groups, there is a gap of three letters between every two consecutive letters.

All except Watermelon grow on trees, while watermelon grows on creepers.

All except Enmity are synonyms.

339 = 3 × 3 = 9 326 = 3 × 2 = 6 428 = 4 × 2 = 8 338 = 3 × 3 ≠ 8 So, option (D) is odd one out.

All except Wheat are kharif or summer crops, while wheat is a rabi crop.

All except SAARC are world organisations.

All other groups contain only one vowel.

Putting A = 1, B = 2, ……….Z = 26 we have :DG2 = G – (D + 2) = 7 – (4 + 2) = 1;EK5 = K – (E + 5) = 11 – (5 + 5) = 1;JR6 = R – (J + 6) = 18 – (10 + 6) = 2;PY8 = Y – (P + 8) = 25 – (16 + 8) = 1;RV3 = V – (R + 3) = 22 – (18 + 3) = 1.

In all other groups, the first and second letters occupy the same positions from the beginning and end of the alphabet, and so do the third and fourth letters.

Each of the numbers except 168, is a perfect square.