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.
3
6
8
5
8
4
4
7
?
Answer: A. 6
Clearly, sum of numbers in each row is 17. So, missing number = 17 - ( 4 + 7 ) = 6.