If it took eight men ten hours to build a wall, how long would it take four men to build it?

People make me, save me, change me, raise me. What am I?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

Using Only Five 5's and any mathematical operator make sum as 37

Consider this: Arnold Schwarzenegger has a big one. Michael J. Fox has a small one. Prince doesn’t have one. The Pope has one but never uses it. Bill Clinton has one and uses it all the time. What is it?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?