Four number-sets have been given below, out of which three are alike in some manner and one is different. Select the number-set that is different from the rest.

(84, 116, 181)

(84, 116, 181) ⇒ 84 + 32 = 116  AND 116  + (32 × 2) = 180 ≠ 181

(44, 89, 179) ⇒ 44 + 45 = 89 AND 89 + (45 × 2) = 179

(71, 108, 182)  ⇒ 71 + 37 = 89 AND 37 + (37 × 2) = 182

(35, 81, 173) ⇒ 35 + 46 = 89 AND 89 + (46 × 2) = 173