Question 585884
There's only one combo of "123" out of <img src="http://latex.codecogs.com/gif.latex?\large _9P_3 = \frac{9!}{(9-3)!}= 504" title="\large _9C_3 = \frac{9!}{3!(9-3)!}= 84" /> different combinations. So the probability is {{{1/504}}}

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