namany6522 namany6522

12-03-2024
Mathematics

contestada

Give a combinatorial proof of this identity. Hint: What if some number of a group of people wanted to go to an escape room, and among those going, one needed to be the team captain?

a) nCk=nC(n−k)
b) nCk=nPk
c) nPk=nCk
d) n!=nCk×nPk

Respuesta :

Otras preguntas

Why was Ernest Hemingway significant in literature?

Solve for the indicated variable. 6t + r = s for t.

What was the Dawes Plan and why did it falter in 1929

What advice can you offer me regarding my school's spelling bee which is on Friday? I'm in the 6th grade and have to study 6 and 7 and 8

Change the fraction 1/5 to a percent. A. 50% B. 20% C. 45% D. 12%

Which banker, known as the Rockefeller of the financial world, had the greatest control over U.S. finances in the late 1800s? A. Henry Bessemer B. Leland

Give synonyms for: to arange to iron to advance to develop to practise to surprise to exhibit to appreciate plizz*thankyou

in what ways do you think members of congress might support and defend the us constitution

How many chromosomes does a child get from each parent?

For a satellite to stay in orbit around Earth, it has to be moving forward very fast all the time. What force will make it fall to Earth if it goes too slowly?