What is a permutation?

Factorials, Permutations, and Combinations

Interactive Video
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Mathematics
•
9th - 10th Grade
•
Hard

Thomas White
FREE Resource
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A method to calculate probability
A way to arrange objects in a specific order
A way to count objects
A type of mathematical operation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many ways can the letters X, Y, and Z be arranged?
12
3
6
9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the symbol 'n!' represent in permutations?
The division of n by 2
The difference between n and 1
The product of all positive integers up to n
The sum of n numbers
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is 8 factorial (8!) calculated?
8 + 7 + 6
8 + 7 + 6 + 5 + 4 + 3 + 2 + 1
8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
8 x 7 x 6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a TV station has 8 news stories, how many different ways can they be arranged?
8
40,320
336
5,040
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for permutations of n objects taken r at a time?
n! / (n-r)!
n! / r!
n! + r!
n! x r!
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many ways can 3 stories be selected from 8?
336
56
720
1,680
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