In a class of students, the following data table summarizes how many students have a ent or a dog. What is the probability that a student who has a dog also has a cat?
Has a cat Does not have a cat
Has a dog
5
Does not have a dog
4
18

don kno

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.