Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

What can you hold in your right hand, but never in your left hand?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

John was piloting a plane behind a car but was never able to overtake it. Why?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

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