How can a man go eight days without sleep?

Our product and our sum always give the same answer. Who are we?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

I taste better than I can smell. Who am I?

Which country gets ill every time?

What is full of holes but still holds water?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

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