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Pre-calculus-ck answer

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how many different ways can the letters in the word SOCIAL be arranged if the letter C must be directly followed by the letter I?

Answer: 720

  • Pre-calculus-ck answer -

    Treat the CI as one item, so now you just have to arrange 5 items which is 5! or 120 ways, not 720

    correct answer: 120

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