Question 1134624: if 4 numbers from 1 to 1000 are chosen at random, one at a time, find the probability that they will be chosen in decreasing order Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website! .
if 4 numbers from 1 to 1000 are chosen at random, one at a time, find the probability that they will be chosen in decreasing order
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Solution
When 4 numbers are chosen, there are 4! possible permutations of them, influencing to their order.
Of this 4! = 1*2*3*4 = 24 permutations, only one provides the requested decreasing order.
Therefore, the probability under the problem's question is .