Math/ Algebra 2

How many different ways can the letters in the word COMBINATIONS be arranged if the letter C is first and the letter S is last?
Thank you in advance ^^

asked by Cindy
  1. Since the first and last are fixed, that leaves you with the letters
    OMBINATION , I see two I's and two O's

    number of arrangements of these
    = 10!/(2!2!) = 907200

    posted by Reiny

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