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

ancient egypt had a social hierarchy. if the hierarchy had five levels with the pharaoh st the top at which level were artisans and scribes

The minimum monthly payment for anita's credit card is 2% of her balance or $10, whichever is higher. if anita's balance at the end of her last billing cycle wa

What output returns the Boolean value FALSE? A) 3 B) 2 C) 1 D) 0

Suppose that a normal distribution has a mean of 20 and a standard deviation of 4. What is the z-score of 22?

A mermaid is swimming at sea level when a human comes by she dives in the water at a rate of 8 meters she continues to descend 20 second what depth is she now

What is similar about why congress and the courts informally change the constitution? How do their methods changing the constitution vary?

What do oxidation reactions produce during the electrolysis of water? H2(g) H2O(l) O2(g) OH–(aq)

What is the value of x?

The declaration of the rights of man and of the citizen stated the powers of government came from the people not the king who wrote this document

what does 2x+3x equal i forgot how to do this