A teacher decides to give a pop quiz one day but all of her students refuse to take the quiz thinking that the teacher will call off the quiz. She can give only one of these students a detention for skipping the quiz. All of the students know each other’s names and if a student knows he/she is getting a detention they take the quiz.
How can she threaten her students with the single detention so they all take the quiz?
She tells them that she will give the student who skips the quiz whose name comes first alphabetically a detention. This student won’t skip because they know they are getting a detention if they do. The next person alphabetically will then know that they will get a detention so they won’t skip either, and so on.
See also best riddles or new riddles.cleanlogicmathshort
How many sides does a circle have?
Two. The inside and the outside.logicshortwhat am I
I travel all over the world. But I could not move, just stay in a same single spot. What Am I?
When does Halloween come before Valentine's day?
In a dictionary.logicshort
In olden days you are a clever thief charged with treason against the king and sentenced to death.
But the king decides to be a little lenient and lets you choose your own way to die.
What way should you choose?
Remember, your're clever!
I would have chosen to die of "old age". Did you?logicshort
In the final stretch of a road race, you pass the 2nd-place runner right before crossing the finish line. What place do you finish in?
You finish in second place. You would have had to pass the first place racer to have finished in first place.cleanlogicshort
A hundred feet in the air, but it's back is on the ground. What is it?
A Centipede that turned upside down.cleanlogicshort
You can see me in water, but I never get wet. What am I?
Who is bigger: Mr. Bigger, Mrs. Bigger, or their baby?
The baby, because he is a little bigger.logicshort
A sundial has the fewest moving parts of any timepiece. Which has the most?
An hourglass, with thousands of grains of sand.logicshortwhat am I
What gets wet while it's drying?