Amanufacturer has a rectangular sheet of metal measuring 45 inches by 105 inches. which of the following shows the number of school crossing signs that can be cut from this sheet of metal.

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.