I will try to explain this one, I need to know what number should replace the question mark?
There are 4 squares, with 4 numbers, one in each corner
15 3 7 10
1 2 0 3
The numbers in the bottom row in each case (taken together) seem to be the difference between the two numbers in the top row. As the difference between 32 and 22 is 10, i suggest the missing digit is 1.