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April 19, 2014

April 19, 2014

Posted by **Anonymous** on Thursday, June 14, 2012 at 12:33am.

do i use 7P5? since i am choosing 5 numbers from 7 and they can't be repeated?

- statistic & probability -
**drwls**, Thursday, June 14, 2012 at 3:47amYou have 6 choices for the first digit, which cannot be zero, six for the second digit (which can be zero), five for the third digit, then four and then 3.

That makes 6*6*5*4*3 = 2160 possibilities

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