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

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

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

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

What is harder to catch the faster you run?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?