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- Practice: Permutations And Combinations
Practice: Permutations and Combinations
Flashcard
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
Student preview
15 questions
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1.
FLASHCARD QUESTION
Front
What is a permutation?
Back
A permutation is an arrangement of objects in a specific order. The order matters.
2.
FLASHCARD QUESTION
Front
What is a combination?
Back
A combination is a selection of objects where the order does not matter.
3.
FLASHCARD QUESTION
Front
How do you calculate permutations of n objects taken r at a time?
Back
The formula is n! / (n - r)!.
4.
FLASHCARD QUESTION
Front
How do you calculate combinations of n objects taken r at a time?
Back
The formula is n! / (r! * (n - r)!).
5.
FLASHCARD QUESTION
Front
What is the factorial of a number?
Back
The factorial of a number n (denoted as n!) is the product of all positive integers up to n.
6.
FLASHCARD QUESTION
Front
How many ways can you arrange 3 books on a shelf?
Back
3! = 6 ways.
7.
FLASHCARD QUESTION
Front
If you have 5 different fruits, how many ways can you choose 2?
Back
5C2 = 10 ways.
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