The local newspaper has letters to the editor from 80 people. If this number represents ​8% of all of the​ newspaper's readers, how many readers does the newspaper​ have?

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.