Question 791237
Find probability of a license plate with two vowels (a,e,i,o,u) 
and three identical digits.
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LLNNN
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# of ways to succeed:: ?
5*4*9*1*1 = 180
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Assuming only vowels are allowed for LL you get
# of possible outcmes:
5*5*9*10*10 = 22500
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P(condition) = 180/22500 
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Cheers,
Stan H.