Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

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

What is black when you buy it, red when you use it, and gray when you throw it away?

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.

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

Can you find out the remainder when 3^300 is divided by 5?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

How can a man go eight days without sleep?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?