If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Why is it very easy to weigh a fish?

How can you make a TV, a bed, a dog, and a car liquid?

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?

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

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

With the following rules:

(A) White can make up to 10 legitimate moves until all kings are checkmate.
(B) White can take any black piece except the king.
(C) The White King cannot be in check position at any time of the game.

Can you checkmate all kings in less than 10 moves?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?