SafeBreakers - Magic square -

SafeBreakers is a math puzzle game. When you find correct number, the safe door will be opened.
There are 16 buttons on the safe box. These buttons are sequential number from 1 to 16. But some buttons are blank.
You need to find which number is correct on the blank button.
The sum of numbers in all rows, all columns, and both diagonals are same constant. Its called Magic square.
Lets try answer as soon as possible.

There are 10 Levels (Each level has 10 questions)