Count them! There are 2 11's. There is 1 13. There are 3 15's. There is 1 16. There are 4 17's. There are 2 18's. There are 3 19's. Remember that "MOde" starts with "MO", and so does "MOre" and "MOst". Which one of those numbers are there "MOre" of than any other? Knowing what "MOde" means, and having a way to remember it, should allow you now to be able to answer the question. Edwin