Answer:
Explanation:
By its very nature, a set can not have duplicate components. Multiset or Bag is the appropriate structure to allow duplicate elements: ... For example, {a, a, b} and {a, b} are different multisets even though they are the same set. But, order doesn't matter, because {a, a, b} and {a, b, a} are the same multiset.
Hope this helped !!!