anonymous
  • anonymous
How many arrangements of 3 digits can be formed from the digits 0 through 9? 1,000 729 720 I got 504.....
Algebra
katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
how'd you get 504?

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anonymous
  • anonymous
I think of it like this. How many numbers are there between 0 and 999, inclusive?
anonymous
  • anonymous
I used permitation. P(n-r)=[P(n,r)=\frac{ n! }{ (n-r)! }\]
anonymous
  • anonymous
So I put 9 as n |dw:1443456086685:dw|
anonymous
  • anonymous
|dw:1443456130452:dw|
anonymous
  • anonymous
@starlord can you help me too?
anonymous
  • anonymous
I'm honestly not good at the statistics, but it would seem that 1000 is the logical result if you count the numbers from 000 to 999. either way, your 9s should be 10s
anonymous
  • anonymous
okay thank you!!!

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