Alex calculates that he has a minimum household budget of 55,600. if he works 200 hours in one month, what is the minimum hourly rate Alex needs to be paid?

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.