An Unpopular Invention
My invention is not very popular with people who visit the doctor. It is pointy and sometimes makes people cry. Who am I and what did I invent?
Hint:
Walking In The Rain
Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?
Hint:
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
Crying In The Bathtub
Hint:
Crying Ghouls Riddle
Hint:
How Many Batteries?
You have a flashlight that takes 2 working batteries. You have 8 batteries but only 4 of them work.
What is the fewest number of pairs you need to test to guarantee you can get the flashlight on?
What is the fewest number of pairs you need to test to guarantee you can get the flashlight on?
Hint:
7. If you break the batteries into 3 groups: Two groups of 3 and one group of 2. By doing this you guarantee that one of the groups has 2 working batteries. Both of the groups of 3 have 3 possible combinations of 2 batteries and the group of 2 only has 1 combination. So, 3 + 3 + 1 = 7 tries at most to find two working batteries. Did you answer this riddle correctly?
YES NO
YES NO
Voiceless It Cries Riddle
Hint: You can feel it, but can not see it.
The King Of Measure
Hint:
The More You Take, The More You Leave Behind
Many times you need me. The more and more you take me further, the more and more you leave me behind. What am I?
Hint:
Force And Strength Can Not Get Through Riddle
What force and strength can not get through, I with a gentle touch can do, and many in the streets would stand, were I not as a friend in hand.
Hint:
It Hears With No Ears Riddle
It lives without a body, hears without ears, speaks without a mouth, and is born in air. What is it?
Hint:
Not A Single Person Riddle
While walking across a bridge I saw a boat full of people. Yet on the boat there wasn't a single person. Why?
Hint:
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:
Rain Coming Down Riddle
Hint:
The Pain Train Riddle
A girl and a boy are situated in a space surrounded by a railway. There is a train on the rails which is very very fast and they are unable to cross the rails without being hit by the train. The girl wants to visit her mother in the hospital and the boy wants to visit his father in prison. How will they manage to do that?
Hint:
The boy will push the girl on the rails. On one hand, she will get hurt and she will go to the hospital. On the other hand, the boy will go to prison because he pushed her. Did you answer this riddle correctly?
YES NO
YES NO
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