Select the type of problems you would like to create:

up to 12	up to 18	2 by 1	2 by 2	3 by 2	3 by 3
11 × 4	18 × 15	55 × 5	66 × 28	123 × 45	759 × 386

Number of problems : 10 20 30 50 100

Format : Vertical Horizontal