Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

virtus

find the no. of ways in which 8 people can be seated at 2 round tables with 4 people sitting at each table?

  • one year ago
  • one year ago

  • This Question is Closed
  1. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    got it???

    • one year ago
  2. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    acually its like ... choose four people ...then arrange them .... permutaion means choosing and aranging

    • one year ago
  3. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    36

    • one year ago
  4. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    that dot means multiplty

    • one year ago
  5. virtus
    Best Response
    You've already chosen the best response.
    Medals 0

    why does the answer in my solution book say this : 7x6x5x3x2x1x2

    • one year ago
  6. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    wait a sec .... let me take a look at question again

    • one year ago
  7. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    WAIT I HAVE A WAY

    • one year ago
  8. virtus
    Best Response
    You've already chosen the best response.
    Medals 0

    @hba having epiphanies are we?

    • one year ago
  9. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    IF UR ASKED OF A ROW THEN n! IF UR ASKED ABOUT A CIRCLE OR ROUND ITS (n-1)! AND IF ITS A NECKLACE OR GARLAND ITS 1/2(n-1)!

    • one year ago
  10. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    IN UR CASE IT WOULD BE (8-1)! =7!

    • one year ago
  11. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    AND 2 TABLES SO U MULTIPLY IT BY 2 THEN

    • one year ago
  12. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    naaaa

    • one year ago
  13. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    Remember that a circular permutation is (n – 1)! Break the seating process into "activities" like this: 1) Choose the people who are seated at each table. C(8,4 = 8•7•6•5/4•3•2•1 = 70). When you choose for 1 table the other four automatically go to the other table. 2) Arrange the 4 people at table A: (4 – 1)! = 3! = 6 3) Arrange the 4 people at table B. Also 3! =6 So answer is C(8,4)•3!•3! = 70•6•6 = 2520

    • one year ago
  14. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    he copied it from somewhere :D

    • one year ago
  15. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    anyway ... nice work @hba :D

    • one year ago
  16. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    You are free: to Share — to copy, distribute and transmit the work to Remix — to adapt the work

    • one year ago
  17. Hashir
    Best Response
    You've already chosen the best response.
    Medals 0

    ^^ LOL

    • one year ago
  18. virtus
    Best Response
    You've already chosen the best response.
    Medals 0

    hey @hba so you used combinations and not only permutations for this questions?

    • one year ago
  19. hba
    Best Response
    You've already chosen the best response.
    Medals 2

    yeah

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.