Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

In the formation, you can see a few arranged matchsticks. Can you form three squares by moving just three matchsticks?

What do you see here? Your task is to find three words hidden in the optical illusion

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

Prove that twice of ten is the same as twice of eleven.

Why Aeroplane windows are round?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

What does below chemistry rebus means?

What question can you never answer yes to?