Enter derangement


How does the Derangements - Subfactorials Calculator work?
Free Derangements - Subfactorials Calculator - Calculates the number of derangements/subfactorial !n.
This calculator has 1 input.

What 1 formula is used for the Derangements - Subfactorials Calculator?

!n = [n!/e + 0.5] where [] is the floor function and e = Eulers constant of 2.718281828459

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What 7 concepts are covered in the Derangements - Subfactorials Calculator?
permutation with no fixed points
derangements - subfactorials
Famous mathematician who developed Euler's constant
The product of an integer and all the integers below it
the greatest integer that is less than or equal to x
a way in which a set or number of things can be ordered or arranged.
nPr = n!/(n - r)!
calculate the number of permutations of a set of n objects in which none of the elements occur in their natural place
Example calculations for the Derangements - Subfactorials Calculator

Derangements - Subfactorials Calculator Video