Three of the following four sets of numbers are alike in a certain way and one is different. Select the odd one.
Answer & explanation
Correct answer: option 3
11 × 22 = 242 ÷ 2 = 121
15 × 30 = 450 ÷ 2 = 225
22 × 44 = 968 ÷ 2 = 484 ≠ 456
6 × 12 = 72 ÷ 2 = 36