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Mathematics 15 Online
OpenStudy (catneedshelp6):

Find the number or permutations of the first 8 letters of the alphabet taking 2 letters at a time. A. 56 B. 336 C. 3720 D. 20,160

OpenStudy (wolf1728):

Do you know how many ways you can choose 2 letters from8?

OpenStudy (catneedshelp6):

No,I don't understand this at all

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