How many times can you subtract the number two from the number fifty?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

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?

If an electric train is travelling south, then which way is the smoke going?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Solve the following series:
AZ, GT, MN, __, YB

Who is that with a neck and no head, two arms and no hands? What is it?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?