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?

What is the next number in the series?

15 29 56 108 208 ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

In the given picture, in how many ways can you read the word "Tiger"?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

Why do we preferably have round manhole covers and not square ones?

What has many keys but can’t open a single lock?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?