Can you write down eight eights so that they add up to one thousand?

Who is that with a neck and no head, two arms and no hands? What is it?

You can see three almost identical images below. Can you spot the odd one out from them?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Which digit occurred maximum times between the number 1 and 1000?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

What is the next number in this matchsticks series riddle?

What's the only room from which no one can enter or leave

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

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?