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Mathematics 13 Online
OpenStudy (anonymous):

How many license plate combinations from 3 digits followed by 3 letters?

OpenStudy (wikiemol):

10*10*10*26*26*26

OpenStudy (anonymous):

I forgot to include "if no repeat is allowed" is it the same answer?

OpenStudy (wikiemol):

oh no then it is 10*(10-1)*(10-2)*26*(26-1)*(26-2)

OpenStudy (anonymous):

so basically it's 10*9*8*26*25*24?

OpenStudy (wikiemol):

yes, because the number of possibilities is always one less than the last since you cant use a number you have already used.

OpenStudy (anonymous):

Thank you good sir

OpenStudy (wikiemol):

You are very welcome.

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