Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 14 | 21 | 165 |
| 13 | 19 | ? |
| 10 | 17 | 99 |
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 140.
The logic used here is:
Row 1: (14 + 1) × ((21 + 1)÷ 2) = 15 × 11 = 165
Row 3: (10 + 1) × ((17 + 1)÷ 2) = 11 × 9 = 99
Row 2: (13 + 1) × ((19 + 1)÷ 2) = 14 × 10 = 140