What begins with T, ends with T, and has T in it?

Can you find the key in the picture below?

Can it be possible to build a house that has all its four walls facing towards the South?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

The Judge knows that Alamgir was killed by his girlfriend Jasline, but the judge is unsure whether to punish her. Why?