There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?
Place the apple on one person's head.
Similar riddles
See also best riddles or new riddles.
cleanlogicBefore Mt. Everest was discovered, what was the highest mountain in the world?
Mt. Everest; it just wasn’t discovered yet.
cleanlogicBefore Mt. Everest was discovered, what was the highest mountain in the world?
Mt. Everest; it just wasn’t discovered yet.
logicshort1
11
21
1211
111221
312211
What is the next number in the sequence?
The next number it: 13112221. Each number describes the previous number. Starting with 1, the second line describes it 11 (one 1). Then the third line describes 11 as 21 (two 1’s). Then the fourth line describes 21 as 1211 (one 2, one 1). This is the pattern.
logicshort1
11
21
1211
111221
312211
What is the next number in the sequence?
The next number it: 13112221. Each number describes the previous number. Starting with 1, the second line describes it 11 (one 1). Then the third line describes 11 as 21 (two 1’s). Then the fourth line describes 21 as 1211 (one 2, one 1). This is the pattern.
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.
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.
logicshortwhat am IAlone I am 24th, with a friend I am 20.
Another friend and I am unclean.
What am I?
The ‘?’ is ‘L8′. All of the numbers, when read upside down, are the numbers 86 – 91.
logicshortwhat am IAlone I am 24th, with a friend I am 20.
Another friend and I am unclean.
What am I?
The ‘?’ is ‘L8′. All of the numbers, when read upside down, are the numbers 86 – 91.
logicshortwhat am IAlone I am 24th, with a friend I am 20.
Another friend and I am unclean.
What am I?
The ‘?’ is ‘L8′. All of the numbers, when read upside down, are the numbers 86 – 91.
logicshortwhat am II have keys but no locks. I have a space but no room. You can enter, but can’t go outside. What am I? I have a space but no room. You can enter, but can’t go outside. What am I?
A keybord.
