Combination Problems( Week 39 Practice) 1. Helen want to make a ring for graduation. She can choose from 3 types of stones and 4 types of metals. How many combinations of a stone and a metal are there? 2. Using digits 1, 2, 3, 4, 5, 6, and 7 (Each digit can be used as many times as you want), how many 2-digit numbers can you make? 3. There are 10 people in a team. If they will shake hands with each other only once during a meeting, how many handshakes will be made in total? 4. Nancy has 6 blouses and 5 pairs of pants. How many different outfits can she make from these clothes? 5. Smith stopped at a restaurant for dinner. There are 20 kinds of main dishes and 5 kinds of soup. How many possible combinations can be made from the menu (Each with one main dish and one soup)? |