Here the matrix H given.
means the first number shows the number for row and the second number is for the column.
So for 23, here second row and third column.
In the second row there are 3 numbers. Those are 15, 9, 75.
Now as 23 given, we will check the third number which is in the third column.
The third number is 75.
So second row third column we will get the number which is 75.
We have got the required answer.
The value of the element at = 75.
So option 4 is correct here.