I have teeth but i don't bite. Who Am I ?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

I’m tall when I’m young, and I’m short when I’m old. What am I?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

What is the fastest way to double your money?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

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

PS: You may start the number from 0.