The Gardners Riddle
Gretchen and Henry were discussing their new neighbors, the Gardners. Gretchen mentioned that she met two of the daughters, and they each had blond hair.
"I have met all of the sisters," replied Henry, "and the probability that both of the girls you met would have had blond hair, assuming you were equally likely to meet any of the sisters, is exactly 50%. Do you know how many children there are?"
After thinking for a minute, Gretchen asks if the family is abnormally large. When Henry replies that it is not, Gretchen tells him how many girls are in the family. What number did she say?
"I have met all of the sisters," replied Henry, "and the probability that both of the girls you met would have had blond hair, assuming you were equally likely to meet any of the sisters, is exactly 50%. Do you know how many children there are?"
After thinking for a minute, Gretchen asks if the family is abnormally large. When Henry replies that it is not, Gretchen tells him how many girls are in the family. What number did she say?
Hint:
Gretchen said that there were 4 girls in the family, three of whom were blond.
This would make the probability that she saw two blonds (3/4) * (2/3), which equals 1/2.
Other numbers would work, but the next pair would lead to a rather large family. Did you answer this riddle correctly?
YES NO
This would make the probability that she saw two blonds (3/4) * (2/3), which equals 1/2.
Other numbers would work, but the next pair would lead to a rather large family. Did you answer this riddle correctly?
YES NO
Known For Having Pointy Ears
We are known for having pointy ears
And for making Christmas toys
Which are delivered by Santa to
All of the good girls and boys
We are?
And for making Christmas toys
Which are delivered by Santa to
All of the good girls and boys
We are?
Hint:
A Mother Was Killed In A Circular House Riddle
The daughter said she was playing with her dolls, the son said he was playing outside in the garden, the maid said she was dusting corners, the butler said he was watching the son, and the chief said he was baking pies.
Who killed the mother?
Hint:
The Maid; As she said she was dusting the corners and in a round house, there are no corners... Did you answer this riddle correctly?
YES NO
YES NO
Cindy Has 5 Kids Riddle
Hint:
The 5th kids name is What. "What is the name of the 5th kid." Did you answer this riddle correctly?
YES NO
YES NO
A Woman Has Five Cousins Riddle
Monday is the first cousin.
Tuesday is the second cousin.
Wednesday is the third cousin.
Thursday is the fourth cousin.
What is the name of the fifth cousin.
Hint: The expected answer to your riddle would be "Friday.
"But that is not correct. And all the information you need to find the answer is contained within the riddle.
The name of the 5th is 'What.' As the riddle told you "What is the name of the fifth cousin." it was a statement, not a question. Did you answer this riddle correctly?
YES NO
YES NO
Someones Mom Has 4 Sons Riddle
Hint:
The question itself says "someone's" mom. Given the name of the three other sons the name of the fourth son can be Someone. Did you answer this riddle correctly?
YES NO
YES NO
What Will You Open First Riddle
Hint:
Mike Mom Has Three Sons Riddle
Hint:
The correct answer is mike.
4 sons name:
1. Penny
2. Nickel
3. Dime
4. Mike Did you answer this riddle correctly?
YES NO
4 sons name:
1. Penny
2. Nickel
3. Dime
4. Mike Did you answer this riddle correctly?
YES NO
Five Apples Riddle
Hint:
The fifth woman took the entire basket, with the apple still in it. Did you answer this riddle correctly?
YES NO
YES NO
I Have Keys But No Lock
I have space but no room.
You can enter, but you can't go outside.
What am I?
Hint:
I Supply The Facts
I supply the facts, but you supply the thoughts. I am also used to describe realistic droughts. My inhabitants are abstract as their places, And I provide details of their words & faces. I hold details in a very complex form, I may cause your mind to conjure up a storm. I hold many different views from different eyes, My facts can be hard to find; as if in disguise. I may tell of facts, but it may be theories I contain, I can inform, persuade, and can even entertain. I tell of a little girl, and of men chasing a whale, and only through me can you find the answer to this tale. What am I?
Hint: I am educational.
Lightbulbs Of Love
Hint:
A One Way Street
A girl who was just learning to drive went down a one-way street in the wrong direction, but didn't break the law. How come?
Hint:
I Cover The Planet
I have a floor but I'm not a room
I wave but have no hand
I'm wet but I'm not a towel
I have currents but no electricity
I contain fish but I'm not a tank
I cover a lot of the planet but I'm not land
I wave but have no hand
I'm wet but I'm not a towel
I have currents but no electricity
I contain fish but I'm not a tank
I cover a lot of the planet but I'm not land
Hint:
The Red Hat
Once upon a time there lived a king who wished to find the wisest man in the realm to be his assistant. He summons the 3 known wisest men to his court and he administers the following test.
He sits them in a circle, facing each other and he says Im going to put either a red hat or a white hat on each of your heads. He proceeds to place a red hat on each of their heads. Obviously they can see each other but there are no mirrors in the room so they cant see whats on their heads. He says If you can see a red hat, raise your hand. They all raise their hands. Then he says If you can tell what color hat you have on, stand up.
Time goes on, one guy looks at another guy, he looks at the other guy. The other guy looks at him. Finally one guy stands up. The question is how did he know he was wearing a red hat?
He sits them in a circle, facing each other and he says Im going to put either a red hat or a white hat on each of your heads. He proceeds to place a red hat on each of their heads. Obviously they can see each other but there are no mirrors in the room so they cant see whats on their heads. He says If you can see a red hat, raise your hand. They all raise their hands. Then he says If you can tell what color hat you have on, stand up.
Time goes on, one guy looks at another guy, he looks at the other guy. The other guy looks at him. Finally one guy stands up. The question is how did he know he was wearing a red hat?
Hint: For a moment or two, nobody moved. Nobody knew for certain what color his hat was, and thats what told the wisest guy that all of the hats were red.
Step 1:
Wiseguy #1 knows he can see two red hats.
Step 2:
Wiseguy #1 thinks, "Hey, if I were wearing a white hat, Wiseguy #2 would see one red hat and one white."
Step 3:
Wiseguy #1 then thinks, "If I were wearing a white hat, and Wiseguy #2 saw one red hat and one white (and if he were wearing a white hat himself), then Wiseguy #3 would have seen two white hats. So, Wiseguy #3 wouldnt have raised his hand to the first question.
Wiseguy #1 thinks, "If that were true, Wiseguy #2 would be sure that he had a red hat. But since Wiseguy #2 was actually unsure about his hat color, it can only mean one thing, my hat is red." Did you answer this riddle correctly?
YES NO
Wiseguy #1 knows he can see two red hats.
Step 2:
Wiseguy #1 thinks, "Hey, if I were wearing a white hat, Wiseguy #2 would see one red hat and one white."
Step 3:
Wiseguy #1 then thinks, "If I were wearing a white hat, and Wiseguy #2 saw one red hat and one white (and if he were wearing a white hat himself), then Wiseguy #3 would have seen two white hats. So, Wiseguy #3 wouldnt have raised his hand to the first question.
Wiseguy #1 thinks, "If that were true, Wiseguy #2 would be sure that he had a red hat. But since Wiseguy #2 was actually unsure about his hat color, it can only mean one thing, my hat is red." Did you answer this riddle correctly?
YES NO
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