April 2011
Beginner
256 pages
5h 40m
English
You’re given a frequent buyer card for your local coffee shop. Each time you buy a cup of coffee you get a stamp on your card. When the card is filled, you get a free cup of coffee. Here are two different scenarios:
• Card A: The card has 10 boxes for the stamps, and when you get the card, all the boxes are blank.
• Card B: The card has 12 boxes for the stamps, and when you get the card the first two boxes are already stamped.
Question: How long will it take you to get the card filled up? Will it take longer or shorter for scenario A versus scenario B? After all, you have to buy 10 cups of coffee in both scenarios in order to get the free coffee. So does it make a difference which card ...
Read now
Unlock full access