give me answer plzzzzzzzzz

Question

Which two of the following statements are true?
Select all that apply
HashSet does not retain order.
LinkedHashSet does not retain order.
Set can contain duplicate values.
Set contains only unique values.

Answer 1

Here is the answer :
HashSet does not retain order.
Set contains only unique values.

Answer 2

HashSet does not retain order.
Set contains only unique values.

Answer 3

HashSet does not retain order.
Set contains only unique values.

Answer 4

With this you can answer your question, it has explanations and examples

But you have to read it

http://javarevisited.blogspot.mx/2012/11/difference-between-treeset-hashset-vs-linkedhashset-java.html?m=1