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LivForMusic

Alice, Bob, Chris, Don, Ed, Frank, Gary, Hank, Irene, Jack, Ken, Lane, Mary, Nancy, Olivia, Pete, Quinn, Ron, Steve, and Tony are candidates in an election to be corporate officers (President, Vice President, and Treasurer.) How many outcomes can the election have with either Alice or Bob as Vice President?

  • one year ago
  • one year ago

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  1. LivForMusic
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    @RadEn

    • one year ago
  2. tacosRterrific
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    I think it is 1140 http://www.mathsisfun.com/combinatorics/combinations-permutations-calculator.html

    • one year ago
  3. LivForMusic
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    @TashaMeni7 did u use combinations or permutations? and what was ur formula? ex. 20P2

    • one year ago
  4. RadEn
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    2*19*18

    • one year ago
  5. LivForMusic
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    @RadEn is that using combination or permutation?

    • one year ago
  6. RadEn
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    i have used filling slot method : |dw:1355778021103:dw|

    • one year ago
  7. RadEn
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    got it ?

    • one year ago
  8. LivForMusic
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    @RadEn sorry my laptop overheated, and no not really. is there any way to do this using permutations?

    • one year ago
  9. LivForMusic
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    would it be 19P2 + 18P2 which would be 648?

    • one year ago
  10. RadEn
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    it similar by permutation, but i think we have to divide it to 2 case, case I : Alice be a president, so the rest is 19P2 case II : Bob be a president, so the rest is 19P2 so, total ways = 2 * 19P2

    • one year ago
  11. RadEn
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    i meant be a vice president :) for alice or bob

    • one year ago
  12. LivForMusic
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    ok yeah that makes sense since it doesnt say one cant be another officer while the other is vice president if that makes sense

    • one year ago
  13. RadEn
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    ok, is it cleared

    • one year ago
  14. RadEn
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    actually, i will use filling slot method for this case because easier :)

    • one year ago
  15. RadEn
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    but by permutation work too

    • one year ago
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