Find the missing number, if a certain rule is followed either row-wise or column-wise. A7 B8 C11 D9
The correct answer is A.
In the 1st column, 2 X 1 + 1 = 3,
In the 2nd column, 12 X 9 + 9 = 117
Similarly, In the 3rd column, 7 X 14 + 7 = 105
Hence, the missing number is 7.