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How many possible arrangements Permutations

  1. Oct 25, 2004 #1
    Hi guys, I'm new in this forum, so i hope you can help me with these problems. It might be easy, but i just started taking Elementary stats... so here they are.....

    a) how many possible arrangements are there of the six letters {a,b,c,d,e,f} in which b and c are next to each other?

    b) how many possible arrangements are there of the six letters {a,b,c,d,e,f} in which b and c are not next to each other?

    thanx for your help in advance
     
  2. jcsd
  3. Oct 25, 2004 #2

    NateTG

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    Perhaps you could start with an easier version of the problem -
    How many ways are there for b,c?
    What about a,b,c? a,b,c,d?
    You might notice a pattern.
     
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