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If four numbers are randomly selected without replacement from set {1, 2, 3, 4}, what is the probability that the four numbers are selected in ascending order?

Respuesta :

The total number of ways that these 4 numbers can be selected = 4! = 24

There is only 1 way to select them in ascending  ( that is 1 2 3 and 4)

Required probability = 1/24


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