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Permutations and Combinations
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
Used 1+ times
FREE Resource
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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 in permutations.
2.
FLASHCARD QUESTION
Front
What is a combination?
Back
A combination is a selection of objects where the order does not matter. It focuses on the group rather than the arrangement.
3.
FLASHCARD QUESTION
Front
How many ways can 3 prizes be awarded to 6 different organizations?
Back
120 ways (calculated as 6P3 = 6!/(6-3)!)
4.
FLASHCARD QUESTION
Front
What is the formula for permutations of n objects taken r at a time?
Back
The formula is nPr = n! / (n - r)!.
5.
FLASHCARD QUESTION
Front
What is the formula for combinations of n objects taken r at a time?
Back
The formula is nCr = n! / [r!(n - r)!].
6.
FLASHCARD QUESTION
Front
Calculate 5!
Back
5! = 120.
7.
FLASHCARD QUESTION
Front
Calculate 8!
Back
8! = 40320.
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