The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number pairs except one. Find that odd number-pair.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 350 : 15.
Logic: 2nd number × (2nd number × 2) = 1st number
Option 1: 128 : 8 ⇒ 8 × (8 × 2) = 8 × 16 = 128
Option 2: 288 : 12 ⇒ 12 × (12 × 2) = 12 × 24 = 288
Option 4: 18 : 3 ⇒ 3 × (3 × 2) = 3 × 6 = 18
Option 3: 350 : 15 ⇒ 15 × (15 × 2) = 15 × 30 = 450 ≠ 350