Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

virtus

  • 2 years ago

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

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

    got it???

  2. Hashir
    • 2 years ago
    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

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

    36

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

    that dot means multiplty

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

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

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

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

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

    WAIT I HAVE A WAY

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

    @hba having epiphanies are we?

  9. hba
    • 2 years ago
    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)!

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

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

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

    AND 2 TABLES SO U MULTIPLY IT BY 2 THEN

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

    naaaa

  13. hba
    • 2 years ago
    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

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

    he copied it from somewhere :D

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

    anyway ... nice work @hba :D

  16. hba
    • 2 years ago
    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

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

    ^^ LOL

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

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

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

    yeah

  20. Not the answer you are looking for?
    Search for more explanations.

    Search OpenStudy
    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.