Question

Find the missing number in the following matrix?

5,   9,  8,   7
8,   6,  9,  10
7,  13,  ?,  19
5,   7,  8,   9

Answer 1

See ccolumn wise
(5+8+7)/4=5
(9+6+13)/4=7
(7+10+19)/4=9
Similarly (8+9+x)/4=8
Then x=32-17=15