Combination Problems( Week 39 Practice) 1. Helen want to make a ring for graduation. She can choose from 7 types of stones and 6 types of metals. How many combinations of a stone and a metal are there? 2. Using digits 1, 2, 3, and 4 (Each digit can be used as many times as you want), how many 2-digit numbers can you make? 3. There are 14 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. Martha has 6 blouses and 6 pairs of pants. How many different outfits can she make from these clothes? 5. David stopped at a restaurant for dinner. There are 15 kinds of main dishes and 10 kinds of soup. How many possible combinations can be made from the menu (Each with one main dish and one soup)? |