Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

I can be cracked, made, told, and played. What am I?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

There are five people. One of them shot and killed one of the other five.
We know following clues:
1. Dan ran in the NY City Marathon yesterday with one of the innocent men.
2. Mike consider being a farmer before he moved to the city.
3. Jeff is a top notch computer consultant and wants to install Ben new computer next week.
4. The murderer had his leg amputated last month.
5. Ben met Jack for the first time six months ago.
6. Jack has been in seclusion since the crime.
7. Dan used to drink heavily.
8. Ben and Jeff built their last computers together.
9. The murderer is Jack's brother. They grew up together in Seattle.

Consider yourself to be a famous detective "Sherlock Homles", Can you find the killer?

What has one eye, but can’t see?

Can you find the missing piece of the Porsche?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?