A company has 24 employees. Each employee volunteers to bring 1 item to the local school fundraiser. One-fourth of the employees bring pencils.
One-third of the employees bring paper.
The rest of the employees bring notebooks.
How many employees bring notebooks?

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.