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

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

What is the next number in the series?

15 29 56 108 208 ?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

With the help clues provided in the image, can you find the 5 digit key?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

Find the smallest sentence with all the English alphabet.