When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What 5-letter word typed in all capital letters can be read the same upside down?

Can you solve below mathematical equation?

2^1234 - 2^1233

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

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?

What two things can you never eat for breakfast?