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.
6
6
8
5
7
5
4
3
?
120
126
320
Answer: B. 8
Clearly, (1st row) x (2nd row) x (3rd row) = 4th row. In the first column, 6 x 5 x 4 = 120 In the second column, 6 x 7 x 3 = 126. Let the missing number in the third column be y. Then, 8 x 5 x y = 320 or y = 8.