Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 15 | 9 | 144 |
| 18 | 12 | ? |
| 22 | 17 | 195 |
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 180.
The logic sued here is:
Row 1: (15 - 9) × (15 + 9) = 6 × 24 = 144
Row 3: (22 - 17) × (22 + 17) = 5 × 39 = 195
Row 2: (18 - 12) × (18 + 12) = 6 × 30 = 180