Five Friends and the Garden

Five friends have their gardens next to one another, where they grow three kinds of crops: fruits (apple, pear, nut, cherry), vegetables (carrot, parsley, gourd, onion) and flowers (aster, rose, tulip, lily). 1. They grow 12 different varieties. 2. Everybody grows exactly 4 different varieties 3. Each variety is at least in one garden. 4. […]