The more it dries, the wetter it becomes. Can you tell what it is?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

What building has the most stories?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

Count the number of balls in picture below:

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?