11.
What is the purpose of the GroupBy operator in LINQ?

12.
In LINQ, what does the Skip operator do?

14.
What is the purpose of the Distinct operator in LINQ?

15.
In LINQ, what does the Max operator do?

16.
What is the purpose of the SelectMany operator in LINQ?

18.
What is the purpose of the Take operator in LINQ?

19.
In LINQ, what does the Count operator do?