You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

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

When did John make this statement?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Find the next number in the following series:
6, 14, 26, 98, __?

Name a key which is hardest to turn.

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

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?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.