The Prime Number Riddle
Two hundred people in an auditorium are asked to think of a single digit number from 1 to 9 inclusive and write it down. All those who wrote down a prime number are now asked to leave. Ninety people remain behind in the hall. How many of these are expected to have written down an odd number?
Hint: Remember that 1 is not a prime number.
Those that remain behind must have written {1,4,6,8,9} and from this only {1,9} are odd. The probability of an odd number is thus 2/5.
Expected number of odds is 2/5 * 90 = 36 Did you answer this riddle correctly?
YES NO
Expected number of odds is 2/5 * 90 = 36 Did you answer this riddle correctly?
YES NO
Bread In A Jam Riddle
Hint:
Wont Stop Yelling Riddle
A teacher wont stop yelling. She closes the door, the windows, but what did the teacher forget to close?
Hint:
NBA 5 Letter Word Puzzle
Hint: Cut the grass and I will show.
If You Throw Me Out Of The Window Riddle
If you throw me out of the window,
I'll leave a grieving wife.
Bring me back, but through a door,
You'll see someone giving life.
What am I?
I'll leave a grieving wife.
Bring me back, but through a door,
You'll see someone giving life.
What am I?
Hint:
The letter 'n'.
Taking 'n' out of 'window' creates 'widow'. Putting 'n' into 'door' creates 'donor'. Did you answer this riddle correctly?
YES NO
Taking 'n' out of 'window' creates 'widow'. Putting 'n' into 'door' creates 'donor'. Did you answer this riddle correctly?
YES NO
A Woman Was In Court For Killing Her Husband Riddle
A woman was in court for killing her husband. She said she wasn't guilty and that she dearly missed him. In the closing statement, the woman's lawyer stands up and says, "Her husband was just missing. Everyone look at the doors. He's going to walk through them in about 30 seconds."
The entire jury stares at the doors waiting for waiting for this woman's husband to walk through the doors. The lawyer and the woman stare at the jury.
The lawyer concludes by saying, "See! If you were so sure she killed her husband, you wouldn't be watching that door!"
The jury immediately gave a guilty verdict. Why?
The entire jury stares at the doors waiting for waiting for this woman's husband to walk through the doors. The lawyer and the woman stare at the jury.
The lawyer concludes by saying, "See! If you were so sure she killed her husband, you wouldn't be watching that door!"
The jury immediately gave a guilty verdict. Why?
Hint:
The woman was watching the jury and not the doors because she knew that her husband wouldn't walk through them because she had killed him. If she has really missed him like she said, she would have been watching the doors. Did you answer this riddle correctly?
YES NO
YES NO
Alex And The New Neighbor Riddle
So Alex and his friends are hanging out in his front yard one day, and they notice the house next to them has been sold and somebody new has moved in. Alex and his friends decide they want to greet the person the next day.
So it is the next day. Before they leave, Alex's mother asks them what they are doing, but since Alex despises his mom and doesn't like to talk to her, he just answer with "we are going to the new neighbor, can you leave us alone?" She says "who is the new neighbor." But Alex tells her to shut up and they leave.
They ring the doorbell, the neighbor comes outside, and Alex says hello and then the neighbors name. So what is the neighbors name?
So it is the next day. Before they leave, Alex's mother asks them what they are doing, but since Alex despises his mom and doesn't like to talk to her, he just answer with "we are going to the new neighbor, can you leave us alone?" She says "who is the new neighbor." But Alex tells her to shut up and they leave.
They ring the doorbell, the neighbor comes outside, and Alex says hello and then the neighbors name. So what is the neighbors name?
Hint:
The new neighbors name is 'Who.' ...When the mom SUPPOSEDLY asked "Who is the new neighbor?", she wasn't asking; she was making a statement. "Who is [the name of] the new neighbor." Did you answer this riddle correctly?
YES NO
YES NO
A Pregnant Woman Wakes Up Riddle
A pregnant woman goes out of her room goes to the fridge, opens a can of tuna, soda, yoghurt and a cookie. What did she open first?
Hint:
What Will You Open First Riddle
You stay alone and you are sleeping in your room when your friends are ringing the doorbell. They've come to have breakfast with you and all you have at home is a box of cornflakes, Bread, Jam and one carton of Milk. What will you open first?
Hint:
I'm Essential For Teams To Work Well
I'm something that's often said but not heard,
Yet my impact is felt in every word.
I'm essential for teams to work well,
Without me, the team is destined to fail.
I'm a key that can unlock any door,
With me, teams can accomplish much more.
What am I?
Yet my impact is felt in every word.
I'm essential for teams to work well,
Without me, the team is destined to fail.
I'm a key that can unlock any door,
With me, teams can accomplish much more.
What am I?
Hint: It's a five-letter word that starts with "T."
Solved: 0%
I've Married Many Women
Hint:
Who Is Asleep On Your Couch
Hint: It's not her brother-in-law
Positive Numbers
Hint:
A Nose That Grows
Every time a man lies his nose grows to 150 percent of its size. Every time he tells the truth it shrinks to 50 percent of its size.
What will happen if he alternates between lies and the truth
What will happen if he alternates between lies and the truth
Hint:
For every pair of a truth and a lie his nose will shrink to 75 percent of its previous size prior to this truth and lie. So the correct answer is 0. As the number of times he tells a lie and the truth ((3/4)n) approaches infinity the length of his nose approaches 0. Did you answer this riddle correctly?
YES NO
YES NO
The 100 Pound Watermelon
There is a 100 pound watermelon laying out in the sun. 99 percent of the watermelon's weight is water. After laying out for a few hours 98 percent of the watermelon's weight is water.
How much water evaporated?
How much water evaporated?
Hint:
50 pounds.
In the beginning it is 99 pounds water and 1 pound other stuff. At the end the 1 pound other stuff is 2 percent so the total weight is 50 pounds. 50 pounds - 1 pound other stuff = 49 pounds water. So 99 pounds - 49 pounds = 50 pounds water lost. Did you answer this riddle correctly?
YES NO
In the beginning it is 99 pounds water and 1 pound other stuff. At the end the 1 pound other stuff is 2 percent so the total weight is 50 pounds. 50 pounds - 1 pound other stuff = 49 pounds water. So 99 pounds - 49 pounds = 50 pounds water lost. Did you answer this riddle correctly?
YES NO
Add Your Riddle Here
Have some tricky riddles of your own? Leave them below for our users to try and solve.