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Mathematics 16 Online
OpenStudy (talyn):

How many different arrangements of the letters in the word SCHOOL are there?

OpenStudy (anonymous):

1 cool

OpenStudy (neer2890):

total 6 letters are there. so to arrange 6 letters we have 6! ways O is repeating 2 times so we have to divide it by 2! to remove the duplicate arrangements which are already made by first O. 6!/2!

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