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Posted by **allen** on Tuesday, September 4, 2012 at 7:51pm.

- finite math -
**Reiny**, Tuesday, September 4, 2012 at 8:59pmCan digits be repeated?

I will assume they CANNOT

number of possible 3 digit numbers

= 6*5*4 = 120

to be less than 300, the number must start with either a 1 or a 2

number of such cases = 2*5*4 = 40

prob of event = 40/120 = 1/3

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