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virtus

10 people are arranged around a table. A chairperson and secretary are to be elected. How many arrangements are possible such s that the chairperson and secretary are opposite each other

  • one year ago
  • one year ago

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  1. hba
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    Remember that a circular permutation is (n – 1)!

    • one year ago
  2. hba
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    so 9!2!

    • one year ago
  3. hba
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    is ur ans i guess

    • one year ago
  4. virtus
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    answer says 7! x 8

    • one year ago
  5. Hashir
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    its 8!

    • one year ago
  6. Hashir
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    because

    • one year ago
  7. hba
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    ohh ok i get it now remove the 2 people (chairperson and secretary) u have total 8 left acc to circular perm 7!

    • one year ago
  8. Hashir
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    the Secretary and president is not to be arranged

    • one year ago
  9. virtus
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    OHHHH i got it they are fixed right

    • one year ago
  10. Hashir
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    therefore the rest can be arranged

    • one year ago
  11. Hashir
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    thus 8!

    • one year ago
  12. Hashir
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    got it dumb pants

    • one year ago
  13. Hashir
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    ???????

    • one year ago
  14. virtus
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    ya dumbpants has got it!

    • one year ago
  15. ujjwal
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    Suppose there is no chairperson and secretary. Now you have eight members. who can be arranged in 7! Now one among the pair of secretary and chairperson can be seated in 8 ways around the table ( the other will be just opposite). so, you have a total of 7! \(\times\) 8

    • one year ago
  16. Hashir
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    i m doing the same thing .... @ujjwal

    • one year ago
  17. ujjwal
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    yeah! great Job!! @Hashir

    • one year ago
  18. Hashir
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    what the hell is what ?

    • one year ago
  19. Hashir
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    idk

    • one year ago
  20. hba
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    dude u are not allowed to ask for it

    • one year ago
  21. hba
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    @ujjwal

    • one year ago
  22. virtus
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    awks.... ummm well thanks everyone!

    • one year ago
  23. hba
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    welcome

    • one year ago
  24. Hashir
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    pleasure

    • one year ago
  25. ujjwal
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    Great! close it now @virtus

    • one year ago
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