Teacher: In this task you will be given a list of numbers and you should remove all duplicates in the list. If every number is repeated in the list an empty list should be returned. Your list should be numbers inside brackets, just like the given list.
Teacher: Now, understand the problem? If you are still confused, see the following example:
[0,1,0,2,5,1]
Solution: [2,5]
Reason: The only elements that are not duplicated is 2 and 5. This is a good example.

Now, solve this instance: [3, 5, 3, 6, 3, 6]
Student:
[5]