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?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

What has many teeth, but cannot bite?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

I am an odd number. Take away a letter and I become even. What number am I?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?