Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

our enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has room for 6 bullets). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point the gun at yourself and pull the trigger. It doesn't go off. Your enemy tells you that you need to pull the trigger one more time, and that you can choose to either spin the barrel at random, or not, before pulling the trigger again. Spinning the barrel will position the barrel in a random position.

Assuming you'd like to live, should you spin the barrel or not before pulling the trigger again?

Can you name some countries which do not have the alphabet 'A' in them?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What has one eye, but can’t see?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?