I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

What Adam and Eve do not have but the rest of the people have?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

How many triangles can you find in this given picture?

A Detective reviewed the information they had on the case so far.

A lady named 'Caterina' was found shot and they already had a list of suspects - Ankit, Tarun, Harish, Manoj and Manish.
The killer is a fan of challenges him by leaving notes ad various places.
* The first was found in a toilet room.
* The second was found in an art room.
* The third was in a restroom.
* the fourth in an underwater room.
* The fifth at the no-smoking room.

All of the notes read the same thing, 'The clues are where you find the notes.' Yet, nothing was found at any place the notes were.
Detective the genius, immediately solved the case.
Who was the killer?

Count the squares in the matchstick puzzle below?

What does it mean?

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?