On a number line. point t is at a distance of 4 units from point u, and point v is at a distance of 6 units, from point u. what is the average distance from point t to v?

Since the possible distances points t and v can be apart is 4+6=10, or 6-4=2 because of each possible way to format them from point v, the average distance is 8

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.