Mike went on a vacation to ohio. When he went home the odemeter read 7,219.4 miles. When he returned home the odemeter read 8,192.6 miles. How many miles did mike travel?

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.