We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

What is the largest number you can write with just 3 digits?

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

Which tank will fill first?

What two things can you never eat for breakfast?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

What goes through cities and fields, but never moves?

What is the fastest way to double your money?

By moving just one matchstick, you need to make the below statement true. Can you do it?