I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Can you replace the question mark with the correct number in the below table sequence?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

Can you tell a 3D object that has just two surfaces?

How many letters are in the alphabet?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Give it food and it will live; give it water and it will die.

John was piloting a plane behind a car but was never able to overtake it. Why?