Correct Answer - Option 1 : 51
The logic follows here is :-
Going column wise,
(1st number) × (2nd number - (3rd number) = 4th number
First column :
9 × 6 - 4 = 54 - 4 = 50
Third column :
7 × 8 - 3 = 56 - 3 = 53
Similarly,
Second column :
8 × 7 - 5 = 51.
Hence, the correct answer is "51".