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OpenStudy (anonymous):
How many combinations are there for a 3-digit number?
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OpenStudy (anonymous):
I think it's 10^3 , while my sister thinks it's 10P3...
OpenStudy (anonymous):
Oh, the hundred place can be 0 btw
OpenStudy (anonymous):
That means 012 is acceptable.
hartnn (hartnn):
then its 10^3 from 0 to 999 = 999-0+1 = 1000
OpenStudy (anonymous):
Nice! Thanks :D abc 10 choices x 10 choices x 10 choices = 10^3, right?!
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hartnn (hartnn):
absolutely...
OpenStudy (anonymous):
Thanks again!! :)
hartnn (hartnn):
welcome again ^_^
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