Choose 1 image  ....  receive 20 images of each on a sheet

Choose 2 images  ....  receive 10 images of each on a sheet

Choose 4 images  ....  receive 5 images of each on a sheet

Choose 5 images  ....  receive 4 images of each on a sheet

Choose 10 images  ....  receive 2 images of each on a sheet