When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

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?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What word is pronounced the same if you take away four of its five letters?

Decode this picture on T-Shirt and tell what it says ?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?

The centre of the third figure is empty. What digit should fit inside?

Which is the smallest number that you can write using all the vowels exactly once?