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

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 professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

Look at the picture and find out which square is not linked with any of the other squares.

Can you identify the Oscar-winning movie from the rebus below?

Whats the next number in the below number sequence pattern.

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

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

What number comes next in this sequence:
7 8 5 5 3 4 4 _