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
?
Answer: A. 94
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.