**
7). (3 points) ****Seven friends went to an amusement park. Each wanted to ride the roller coaster with each of the others. If only 2 can ride the roller coaster together at one time, how many rides are needed so each can ride with all others once?**

Number of
rides:______

8). (3 points) **8 people go to a party. They all shake hands with each other. How many handshakes are there?**

Number of
handshakes:______

9). (3 points) **How many 2-person teams can you make out of a basketball club that has 7 players?**

Number of teams:______

10). (3 points) **Skittles candy has 6 different colors. How many different color combinations can I pick if I select 2 candies and each of the 2 is a different color?**

Number of 2-candy
combinations:______