2012 · Q7
Find the missing number in the following: 3, 7, 52; 5, 11, 126; ?, 9, 107
general-mental-abilitynumber-series
- A6
- B18
- C26
- D36
Explanation
Each row follows (second number)^2 + (first number) = third number: 7^2 + 3 = 52, 11^2 + 5 = 126, so 9^2 + 26 = 107.