In the following question, a matrix of certain characters is given. These characters follow a certain trend, row-wise or column-wise. Find out this trend and choose the missing character accordingly.
| 1 | 7 | 9 |
| 2 | 14 | ? |
| 3 | 105 | 117 |
Option:
A. 26
B. 20
C. 16
D. 12
Answer: D . 12
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Justification:
In the first column, 2 x 1 + 1 = 3.
In the second column, 14 x 7 + 7 = 105.
Let the missing number in the third column be y.
Then, y x 9 + 9 = 117 or 9y = 108 or y = 12.
