I am an odd number. Take away a letter and I become even. What number am I?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

There was a kingdom in which the king had no heir to take over his thrown. Even the queen was dead and he himself was on the verge of dying. He thought about it and then summoned all of the teenagers. He gave one seed each to all of them and asked them to grow the plant. He announced that the one with the most beautiful plant will become the king/queen of the empire after the death of the king.

After a month, all of them were called. The king looked at all of the plants but announced the girl with an empty pot as the queen of the empire. Why?

What has one eye, but can’t see?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At 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." How can that be possible?

I am sure no one can have two things for dinner. what are they?

Through your logical capabilities, can you make 7 an even?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

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