If the sum of the numbers in each row and column is same, which number can best replace the question mark in the figure?

Sum of the numbers in the second row = 29 + 25 + 21
= 75
So, the sum of the numbers in the first row will also be 75
Missing number + 24 + 23 = 75
Missing number = 75 - 47
= 28
The sum of numbers in the third column will also 75.
Missing number + 28 + 21 = 75
Missing number = 75 - 49
= 26
So, '26' can replace the question mark in the figure.