Answer: 2/9 or 0.22
Step-by-step explanation:
Probability = number of possible outcomes/ number of total outcomes
From the given question, total number of outcomes is 18, which the the sum of all the horses in the stable.
P(brown) = number of brown horses/ total number of horses
= 4/18, simplified to 2/9 as s fraction
= 0.22
I hope this helps.