Prove that twice of ten is the same as twice of eleven.

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

There is a place where if I stand up straight, I will still be considered sideways.

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

The more of this there is, the less you see. What is it?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

What does an Island and the letter T have in common?