Can you replace the question mark with the correct number?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

In the picture given below, can you find out which digit will take place of the question mark?

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.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

What is red and smells like blue paint?

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

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?