Replace the question mark with the correct number.

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

Which wheel of car does not rotate when you turn your car right?

What is red and smells like blue paint?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Using eight eights and addition only, can you make 1000?

What is the next number in this series?

4,12,84,3612....

What building has the most stories?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.