You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

Can you identify if it's a murder or a suicide ?

What happened when the wheel was invented?

Before Mount Everest was discovered, what was the highest mountain in the world?

In which direction should the missing arrow point?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

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

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?