Which letter of the alphabet has the most water?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

Solve the equation in the image by looking at the pattern closely.

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

Which is Odd One Out and why?

4377

3954

9862

8454

9831

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

What has a ring but no finger?