If it took eight men ten hours to build a wall, how long would it take four men to build it?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

What is the next number in this series?

4,12,84,3612....

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

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Solve this riddle by finding the odd one out from the rest.

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?