How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

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

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

What can go up a chimney down, but can’t go down a chimney up?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

What is the difference between a jeweller and a jailer?

What can you hold in your right hand, but never in your left hand?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?