There is a class of 25 students they share a set of 100 marker how many do they each get

If you do 100 divided by 25 your answer will be 4. Therefore, each student gets 4 marker.

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.