There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

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

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.

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

You need to remove two matchsticks to make the below equation true. Can you do it ?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

How many sides does a circle have?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?