kayleee2162 kayleee2162

03-08-2017
Mathematics

contestada

How many ways are there to distribute n graded homeworks to n students such that none of them gets their own homework back?

Respuesta :

mperemsky mperemsky

03-08-2017

Assume N students

Student 1 can get (n-1) papers
Student 2 can get (n-1) papers
Student 3 can get (n-1) papers
etc
Student N can get (n-1) papers

So for N students you can have N(n-1)

Answer Link

Otras preguntas

The abolitionist movement sought to end slavery in the United States by freeing all slaves. Frederick Douglass was a respected abolitionist. He had been born a

IN THE BOOK, BRIAN'S WINTER - How does Brian show respect for nature? What does he do with each of the animals he scavenges or kills?

The length of the base of an isosceles triangle is x. The length of a leg is 4x-2. The perimeter of the triangle is 122 . Find x.

Why is the wind a better method of dispersal for spores than for seeds?

which seafloor mapping method can map the largest extent of seafloor in the shortest amount of time?

I need a summary for act 5 of Macbeth, Please give an accurate summary.

And Jack wants to build a fence around his house as shown below the length of the fence will be 52 1/2 feet and width will be 25 1/4 feet. If the fence costs $1

Which of the following atmospheric conditions are needed to create the winds?

57. "Shall we start the lesson", the teacher asked. change this to reported speech

What should a nurse aide do with a used disposable razor