What is the riddle which can be asked all day with a different correct answer each time.

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?

Why blonde cannot dial 911?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

A man dies of old age on his 25 birthday. How is this possible?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

What English word has three consecutive double letters?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n