## Labels

### GED Math Review: Permutations and Combinations

Questions:

1. What is the number of permutations of four objects, using all four objects?
• 1
• 11
• 16
• 24
2. How many permutations of 10 objects are possible, taking only 3 at a time?
• 30
• 120
• 720
• 1,000
3. How many combinations of six objects are possible, taking only 2 at a time?
• 8
• 12
• 15
• 30
4. What is the number of combinations possible, taking 3 objects from a set of 10?
• 30
• 120
• 720
• 1,000
5. Classify each counting problem by writing permutation or combination in the answer box.
• In how many ways can 9 artists be judged for first, second, and third prize?
________________________
• How many three-ingredient sandwiches can you make from ham, turkey, roast beef, salami, cheese, and pickles?
________________________
6. In how many ways can 9 students be seated at 5 dest?
• 45
• 126
• 15,120
• 59,049
7. In how many ways can you form a group of 4 students from a class of 10?
• 40
• 210
• 5,040
• 10,000

1. 24
2. 720
3. 15
4. 120
5. a) permutation b) combination
6. 15,120
7. 210

Reference:

Complete Test Preparation for the GED Test 2014 by Steck-Vaughn