Can you name some countries which do not have the alphabet 'A' in them?

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

Rectify the following equality 101 - 102 = 1 by moving just one digit.

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?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

I always drive my customer away.

Who am I?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

A man dies of old age on his 25 birthday. How is this possible?

You bought me for dinner but never eat me. What am I?