Select the option that is related to the third number in the same way as the second number is related to the first number.
52 : 91 :: 72 : ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 126.
52 : 91 → (52 × 2) - (52 ÷ 4) = 104 - 13 = 91
72 : ? → (72 × 2) - (72 ÷ 4) = 144 - 18 = 126