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Math Hw - involves permutation/combinations

Discussion in 'Homework Help' started by AmazingHacker, Nov 2, 2010.

  1. AmazingHacker


    Likes Received:
    Feb 12, 2008
    I was given this by my teacher for extra credit
    1 _ _ _ _ _ 1 _
    the blanks are numbers from 0-9 excluding 1 since it was given. I need to know how many possible combinations are left and if there is a good website that will generate all the combinations. the numbers in the blank do not repeat.

    Do i do 9c6 ? and that equals the number of combinations for the 6 spots ?
    Last edited: Nov 2, 2010
  2. Entropy

    Entropy Retired Staff Member

    Likes Received:
    Jun 30, 2007
    Permutation = order does not matter therefore you can just plug in the values
    It wouldn't be 9c6. Since 1 is already given then you have 9 available numbers, and since the numbers don't the max possible combinations are : 1 x 9 x 8 x 7 x 6 x 5 x 1 x 4 = 60480
  3. pub6lice2


    Likes Received:
    Sep 30, 2010
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