What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

When is the top of a mountain similar to a savings account?

Why Wine Glass Stem is so long?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Find the next number in the series below.

6 18 270 72090 ?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Can you start the fire using two pieces of wood?

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?