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How many ways are there to pick n objects from n objects if order does matter?
Catalinasep
There is a mathematical function called "factorial", and it is denoted by "!" (the exclamation mark). The factorial is when you multiply a number by every number before it, all the way down to 1.
Eg: 5! = 5*4*3*2*1=120
So, when you choose n objects in random order, at first you have n choices. After that, you have n-1 choices left, and after that, then you have n-2 choices left, and so on.
So the answer to the question "How many ways are there to pick n objects from n objects if order does not matter is: n!
where n! = n*(n-1)*(n-2)*(n-3)*(n-4) . . . (3)*(2)*(1).
* * * * *
That is the number if the order DOES matter.
If the order does NOT matter, as the question requires, the answer is 1.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agon!, or n * (n -1 ) * (n -2) * ... 3 * 2 * 1.
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