Example 1.3.5.

You decide to have a dinner party. Even though you are incredibly popular and have 14 different friends, you only have enough chairs to invite 6 of them.

  1. How many choices do you have for which 6 friends to invite?

  2. What if you need to decide not only which friends to invite but also where to seat them along your long table? How many choices do you have then?

Solution.
in-context