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Lottery Ticket


A sequence of seven digits is randomly chosen in a weekly lottery. Every digit can be any of the digits $0,1,2,3,4,5,6,7,8,9$. What is the probability of having at most five different digits in the sequence?


Probability   Combinatorics  


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Statistics


Attempt 44


Solve 6


First Solve shahriaraminarif1234



Source


  Calibration Round #16
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