Assume that 4 digits are selected at random from the set {1,3,4,5,6,9} { 1 , 3 , 4 , 5 , 6 , 9 } and are arranged in random order. What is the probability that the resulting 4-digit number is less than 9000?
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Select 4 digits at random from the set {1,3,4,5,6,9}. Show more…
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