Solutions – 4.1 (The solution number can be seen on the bottom left of each image.) 1A 1B 1C 1D 2A 2B 2C 2D 3A 3B 3C 3D 4A 4B 4C 4D 5A 5B 5C 5D 6A 6B 6C 6D 6E 6F 6G 6H 6I 6J 6K 7 8A 8B 8C 9 10A 10B 10C 10D