Chances Of A 2nd Girl Riddle
Tipli and Pikli are a married couple (dont ask me who he is and who she is)
They have two children, one of the child is a boy. Assume safely that the probability of each gender is 1/2.
What is the probability that the other child is also a boy?
They have two children, one of the child is a boy. Assume safely that the probability of each gender is 1/2.
What is the probability that the other child is also a boy?
Hint: It is not 1/2 as you would first think.
1/3
This is a famous question in understanding conditional probability, which simply means that given some information you might be able to get a better estimate.
The following are possible combinations of two children that form a sample space in any earthly family:
Boy - Girl
Girl - Boy
Boy - Boy
Girl - Girl
Since we know one of the children is a boy, we will drop the girl-girl possibility from the sample space.
This leaves only three possibilities, one of which is two boys. Hence the probability is 1/3 Did you answer this riddle correctly?
YES NO
This is a famous question in understanding conditional probability, which simply means that given some information you might be able to get a better estimate.
The following are possible combinations of two children that form a sample space in any earthly family:
Boy - Girl
Girl - Boy
Boy - Boy
Girl - Girl
Since we know one of the children is a boy, we will drop the girl-girl possibility from the sample space.
This leaves only three possibilities, one of which is two boys. Hence the probability is 1/3 Did you answer this riddle correctly?
YES NO
Cinderella Playing Soccer
Hint:
Sleeping Zombies Riddle
Hint:
Sailors Playing Cards Riddle
Hint:
Fighting For Hours
Hint: They live on a board. You are their lord.
The Iced Tea
Two girls ate dinner together. They both ordered iced tea. One girl drank them very fast and had finished five in the time it took the other to drink just one. The girl who drank one died while the other survived. All of the drinks were poisoned. How did the girl who drank the most survive?The judge dismissed the case. Why?
Hint:
The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink. Did you answer this riddle correctly?
YES NO
YES NO
Twins Riddle
Hint:
Who Is This Traveler?
A traveler starts a journey. For the first week he goes east. The second he goes in all directions. The third he flies up into the sky. In the fourth he comes back down. Who is the traveler?
Hint:
An iceberg - travels East as an iceberg, free flowing water when melted, flies up to sky when evaporated, falls back down as rain. Did you answer this riddle correctly?
YES NO
YES NO
Bus Driver Eyes
Hint:
The eye color of the reader of this problem. The first sentence is the key: "You are the bus driver". Did you answer this riddle correctly?
YES NO
YES NO
Four Brothers Riddle
There are four brothers in this world that were all born together. The first runs and never wearies. The second eats and is never full. The third drinks and is always thirsty. The fourth sings a song that is never good. What are these four brothers?
Hint:
This Gate's Key Riddle
My first is foremost legally,
My second circles outwardly,
My third leads all in victory,
My fourth twice ends a nominee,
My whole is this gate's only key.
What am I?
My second circles outwardly,
My third leads all in victory,
My fourth twice ends a nominee,
My whole is this gate's only key.
What am I?
Hint:
Twinkle And Rinki Cross A River
Twinkle and Rinki wish to cross a river.
The only way to get to the other side of the river is by boat, but that boat can only take one of them at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both girls manage to cross using the boat.
How?
The only way to get to the other side of the river is by boat, but that boat can only take one of them at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both girls manage to cross using the boat.
How?
Hint:
The Train Of Love
A young man, living in Manhattan, New York, has two girlfriends. One lives to the North, in the Bronx, and the other lives to the South, in Brooklyn.
He likes both girls equally but can only visit one each weekend. He therefore leaves it to chance and takes the first train that arrives when he reaches the train station.
Even though the man arrives at a totally random time every Saturday morning and the Brooklyn and Bronx trains arrive equally often (every ten minutes), he finds himself visiting the girl in Brooklyn on average nine times out of ten. How could the odds so heavily favor taking the Brooklyn train?
He likes both girls equally but can only visit one each weekend. He therefore leaves it to chance and takes the first train that arrives when he reaches the train station.
Even though the man arrives at a totally random time every Saturday morning and the Brooklyn and Bronx trains arrive equally often (every ten minutes), he finds himself visiting the girl in Brooklyn on average nine times out of ten. How could the odds so heavily favor taking the Brooklyn train?
Hint: Think of a way the train schedules might favor one train over the other.
The Brooklyn train leaves exactly 1 minute before the Bronx train.
Let's say the Brooklyn train arrives at 09:00, 09:10, 09:20, etc. and the Bronx train arrives one minute after at 09:01, 09:11, 09:21, etc. Consider the ten minute interval from 09:00 to 09:10. If the man arrives between 09:00 and 09:01, the 09:01 Bronx train will be the first to arrive (assuming that he doesn't arrive at exactly 09:00). If the man arrives between 09:01 and 09:10, the 09:10 Brooklyn train will be the first to arrive. In any ten minute period, the Brooklyn train will be the first to arrive in nine of the ten minutes. Did you answer this riddle correctly?
YES NO
Let's say the Brooklyn train arrives at 09:00, 09:10, 09:20, etc. and the Bronx train arrives one minute after at 09:01, 09:11, 09:21, etc. Consider the ten minute interval from 09:00 to 09:10. If the man arrives between 09:00 and 09:01, the 09:01 Bronx train will be the first to arrive (assuming that he doesn't arrive at exactly 09:00). If the man arrives between 09:01 and 09:10, the 09:10 Brooklyn train will be the first to arrive. In any ten minute period, the Brooklyn train will be the first to arrive in nine of the ten minutes. Did you answer this riddle correctly?
YES NO
The Red Planet Riddle
I'm the fourth planet from the sun
I am known as the red planet
And have two moons rather than one
Hint:
Denver To Australia Riddle
You're the pilot an airplane, traveling from Denver, Colorado to Australia.
The plane is going 652 mph, taking four pit stops and facing severe weather conditions. On the fourth day the plane finally arrives on Australia and everyone on board enjoyed their flight. What is the pilot of the planes name?
The plane is going 652 mph, taking four pit stops and facing severe weather conditions. On the fourth day the plane finally arrives on Australia and everyone on board enjoyed their flight. What is the pilot of the planes name?
Hint:
Your the pilot of the plane! Re-read the first sentence... Did you answer this riddle correctly?
YES NO
YES NO
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