Answer: 0.0014
Step-by-step explanation:
Given : Number of entries in horse race = 13
Number of horses owned = 4
We assume that there are no ties .
Then , the probability that those four horses finish first, second ,third ,and fourth is given by :-
[tex]\dfrac{4!}{^{13}P_4}=\dfrac{4!}{\dfrac{13!}{(13-4)!}}\\\\=\dfrac{4!\times9!}{13!}=.0013986013986\approx0.0014[/tex]
Hence, the required probability = 0.0014