Replace the question mark with the correct number in the below-given picture?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

What do you think with the below Picture ?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Make a sentence consisting of three words that have the whole alphabet.

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.