Using all 13 squares, and not counting different orientations, only one.
96 rectangles.
Squares are actually also rectangles so you could make 8 rectangles without touching any of the squares. However, if you could cut the squares, that would be a different problem....
As many as you want.
2
Using all 13 squares, and not counting different orientations, only one.
You could make 5 rectangles with 10 squares
4 rectangles
Rectangles and squares both have 4 corners.
96 rectangles.
You need 4 rectangles and two squares * * * * * No, you do not need to have squares: there can be six rectangles - as in a brick shape.
Squares are actually also rectangles so you could make 8 rectangles without touching any of the squares. However, if you could cut the squares, that would be a different problem....
As many as you want.
2
81
6
None