THEM: i need the hats and the balls  YOU: that will not work for me, i will take 1 hat 1 ball and 2 books?  THEM: not a chance, i have to have either 2 hats and a ball or two balls and a hat  YOU: i need 1 of each of the hats and balls  THEM: then i need 1 hat, 1 ball and both books  YOU: i really need 1 of each item  THEM: how many points will that give you  YOU: 5  THEM: i will have less, we have to figure something out  YOU: i can take 2 hats and a book or 2 balls and a book?  THEM: i need either 2 hats and a ball or 2 balls and a hat, the books have no value  YOU: what about i get both books and 2 balls?  THEM: no, i guess no deal.