You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Different lights make me strange by changing me into different sizes. What am I?

How can one talk without saying a single word?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

Which is heavier: a ton of bricks or a ton of feathers?

Can you divide the below-given shape into four equal and identical pieces?

It can be easily calculated that the digits 0 to 9 can be arranged into 3628800 distinct ten-digit numbers.

But do you know how many of these numbers are prime?

You can hear me, but you can't touch or see me.

What am I?

How is the moon similar to a dollar?