The first four stones you should pick up to solve the puzzle are numbered 1 through 4. You also cannot pick up stone Y, because that involves making a U-turn. Figure 2 shows how to complete the puzzle. Each puzzle is more difficult than the one that precedes it. A palindrome is a word or phrase that reads the same backward and forward.
Halves pay or receive debts to the penny, and never round up or down.
Halve-nots, however, always round up or down to the nearest dollar. The generous haves round down 50 cents when accepting debts and round up 50 cents when paying, while the selfish have-nots round up 50 cents when accepting payment and round down 50 cents when paying. Paula, Rich, Sola, and Tania all live in the Pay-Me World. They owe one another money but find themselves having difficulty when they try to settle their debts. The statements below give clues as to the category of each friend as well as the amount of each debt.