Study the given matrix carefully and select the number from among the given options that can replace the question mark (?) in it.
| 12 | 7 | 70 |
| 15 | 6 | 78 |
| 11 | 9 | ? |
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 81.
The logic used here is:
Row 1: (12 - 2) × 7 = 10 × 7 = 70
Row 2: (15 - 2) × 6 = 13 × 6 = 78
Row 3: (11 - 2) × 9 = 9 × 9 = 81