You offer to do the dishes for your family for the next month. You suggest that they can pay you in one of three ways.
1. $0.50 each day
2. $0.10 the first day, $0.20 the second day, $0.30 the third day, and so on.
3. $0.01 the first day, $0.02 the second day, $0.04 the third day, and so on, doubling every day.