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?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

What makes this number unique: 8,549,176,320?

Can you count the number of triangles in the given picture?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

What goes up but never comes down?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Solve the following series:
AZ, GT, MN, __, YB