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.
| 4 | 5 | 6 |
| 2 | 3 | 7 |
| 1 | 8 | 3 |
| 21 | 98 | ? |
Option:
A. 94
B. 76
C. 73
D. 16
Answer: A . 94
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Justification:
Clearly, (1st row)2 + (2nd row)2 + (3rd row)2 = 4th row.
Thus, in the first column, 42 + 22 + 12 = 21.
In the second column, 52 + 32 + 82 = 98.
.'. In the third column, missing number = 62 + 72 + 32 = 36 + 49 + 9 = 94.
