If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

What do you see in the image below

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

A dead body is found outside a multi-story multinational company. The case is reported and a homicide detective is called on the crime scene.

He looks at the body and then towards the building. From the position of the body, it is evident that the victim committed suicide. He goes to the first floor of the building and then walks in the direction of the dead body, opens the window and toss a coin in the air.

He goes to second floor and again repeats the process. He keeps doing this till he is done on all the floors. Then he returns back to the floor and tells his team that it is a murder.

How in heaven did he deduce that?

Move four matchsticks to the below square to form three squares?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)