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
4
5
3
7
12
3
?
22
Answer: B. 10
We have : 3 + 4 = number below 4 = 7; 3 + 4 + 5 = number below 5 = 12. 3 + 7 + 12 = number below 12 = 22. .'. Missing number = 3 + 7 = 10.