logicshortA 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.

## Similar riddles

See also best riddles or new riddles.

cleanlogicshortHow could the cowboy travel on friday, then sleep two days and then travel back home on friday.

If the horse was named Friday.

cleanlogicshortwhat am IYou can easily touch me, but not see me. You can throw me out, but not away. What am I?

Your back.

animalcleanfunnylogicshortA bird, squirrel, and a monkey are running to the top of a coconut tree to get a banana - who will be the first to get to the banana?

None – you cannot get a banana from a coconut tree.

logicshort The day before yesterday Cindy was 17. Next year she will be 20. How can this be?

The statement was made on January 1. Cindy's birthday is on December 31. She was 17 the day before yesterday (Dec 30). She was 18 yesterday. She will be 19 this year (Dec 31) and 20 next year.

cleanlogicshortwhat am II have billions of eyes, yet i live in darkness. I have millions of ears, yet only four lobes. I have no muscle, yet i rule two hemispheres. What am I?

I am the human brain. The brain has billions of optic and auditory nerves, four lobes and two hemispheres, and is an organ of the human body.

cleanlogicshortwhat am II am a mother and a father, but have never given birth. I'm rarely still, but I never wander. What am I?

Tree.

cleanlogicshortIf you drop me I'm sure to crack, but give me a smile and I'll always smile back.

Mirror.

logicshortWhat word does this rebus represents?
meta meta
meta meta

Metaphor (Meta 4).

logicmathshortWe all know that square root of number 121 is 11. But do you know what si the square root of the number "12345678987654321" ?

111111111
Explanation:
It's a maths magical square root series as :
Square root of number 121 is 11
Square root of number 12321 is 111
Square root of number 1234321 is 1111
Square root of number 123454321 is 11111
Square root of number 12345654321 is 111111
Square root of number 1234567654321 is 1111111
Square root of number 123456787654321 is 11111111
Square root of number 12345678987654321 is 111111111 (answer)

cleanlogicshortImagine John, a party magician, is carrying three pieces of gold each piece weighing one kilogram. While taking a walk he comes to a bridge which has a sign posted saying the bridge could hold only a maximum of 80 kilograms. John weighs 78 kilograms and the gold weighs three kilograms. John reads the sign and still safely crossed the bridge with all the gold. How did he manage this?

John is a juggler. When he came to the bridge he juggled the gold, always keeping one piece in the air.