When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

When 99 is considered higher than 100?

What does below chemistry rebus means?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

You need to remove two matchsticks to make the below equation true. Can you do it ?

Can you spot the hidden girl in the picture below?

In the Wild West, you are challenged into a death match by two bounty hunters nicknamed Golden Revolver (GR) and Killer Boots (KB). You accept the challenge. None of you want to waste any of the bullet and so a certain rules are laid down:

1) All of you will shoot in a given order till the last man standing.
2) Each of you shoots only once upon his turn.
3) If any one of you is injured, the other two will finish him off with an iron rod.
4) The worst shooter of all (which is you) shoots first and the best one shoots at the last.

Now, how will you plan things if you know that you hit every third shot of yours, KB hits every second shot and GR hits every shot ?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

If two's company, and three's a crowd, then whats four and five ?