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April 9th, 2009, 03:48 AM  #1 
Newbie Joined: Apr 2009 Posts: 1 Thanks: 0  Statistics
What is the probability that a 10 digit number does not have four distinct digits? i.e. calculate the probability that the 10 digit number has at most three distinct digits Distinct digit = not occurring in the 10 digit number more than once ex: 10 digit number 6677564492 distinct digits = 5, 2, 9 

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