Someone answer this ASAP PLEASE!!

No because if you do the higher number minus the lower number you will get a positive. if you do it the other way around you will get a negative number

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.

Where is the problems