Homework Help: Pre-calculus-ck answer

Posted by Lucy on Monday, October 13, 2008 at 3:13pm.

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 - Reiny, Monday, October 13, 2008 at 3:44pm
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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