7.2 Combinations and Permutations Topic Check
Flashcard
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Mathematics
•
12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a combination?
Back
A selection of items from a larger set where the order does not matter.
2.
FLASHCARD QUESTION
Front
What is a permutation?
Back
An arrangement of items from a larger set where the order does matter.
3.
FLASHCARD QUESTION
Front
How do you calculate combinations?
Back
C(n, r) = n! / (r!(n - r)!) where n is the total number of items and r is the number of items to choose.
4.
FLASHCARD QUESTION
Front
How do you calculate permutations?
Back
P(n, r) = n! / (n - r)! where n is the total number of items and r is the number of items to arrange.
5.
FLASHCARD QUESTION
Front
What does 10C5 represent?
Back
The number of ways to choose 5 items from a set of 10 without regard to the order.
6.
FLASHCARD QUESTION
Front
What does 10P5 represent?
Back
The number of ways to arrange 5 items selected from a set of 10.
7.
FLASHCARD QUESTION
Front
If a student takes 4 classes from 6 available classes, how many combinations are there?
Back
15 combinations.
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