Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

virtus

  • 3 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
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    got it???

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

    36

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

    that dot means multiplty

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

    WAIT I HAVE A WAY

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

    @hba having epiphanies are we?

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

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

  11. hba
    • 3 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
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    naaaa

  13. hba
    • 3 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
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    he copied it from somewhere :D

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

    anyway ... nice work @hba :D

  16. hba
    • 3 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
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ^^ LOL

  18. virtus
    • 3 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
    • 3 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.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy