A Rickety Bridge Riddle
Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?
Hint:
17 mins.
The initial solution most people will think of is to use the fastest person as an usher to guide everyone across. How long would that take? 10 + 1 + 7 + 1 + 2 = 21 mins. Is that it? No. That would make this question too simple even as a warm up question.
Let's brainstorm a little further. To reduce the amount of time, we should find a way for 10 and 7 to go together. If they cross together, then we need one of them to come back to get the others. That would not be ideal. How do we get around that? Maybe we can have 1 waiting on the other side to bring the torch back. Ahaa, we are getting closer. The fastest way to get 1 across and be back is to use 2 to usher 1 across. So let's put all this together.
1 and 2 go cross
2 comes back
7 and 10 go across
1 comes back
1 and 2 go across (done)
Total time = 2 + 2 + 10 + 1 + 2 = 17 mins Did you answer this riddle correctly?
YES NO
The initial solution most people will think of is to use the fastest person as an usher to guide everyone across. How long would that take? 10 + 1 + 7 + 1 + 2 = 21 mins. Is that it? No. That would make this question too simple even as a warm up question.
Let's brainstorm a little further. To reduce the amount of time, we should find a way for 10 and 7 to go together. If they cross together, then we need one of them to come back to get the others. That would not be ideal. How do we get around that? Maybe we can have 1 waiting on the other side to bring the torch back. Ahaa, we are getting closer. The fastest way to get 1 across and be back is to use 2 to usher 1 across. So let's put all this together.
1 and 2 go cross
2 comes back
7 and 10 go across
1 comes back
1 and 2 go across (done)
Total time = 2 + 2 + 10 + 1 + 2 = 17 mins Did you answer this riddle correctly?
YES NO
The Day Of My Birthday
Hint:
December 31. Let's assume that December 31 is my correct birthday. Now let's also assume that I am 21 and that today is January 1st (the day after my birthday). That would mean that the day before yesterday (December 30) I would be 20. That fits the riddle so far, but here comes the tricky part!
Let's also say that the current year is 2013. So to clarify, today is January 1st 2013. Next year would be 2014, and the trick is that I will have two more birthdays by the end of 2014, one on December 31st 2013 (22 years old) and one on December 31st 2014 (23 years old).So in 2014, the year after 2013, I will actually turn 23! It's a tricky riddle. Best way to go about it is to use trial and error with all the answers and to also keep an open mind about what "next year" means. Did you answer this riddle correctly?
YES NO
Let's also say that the current year is 2013. So to clarify, today is January 1st 2013. Next year would be 2014, and the trick is that I will have two more birthdays by the end of 2014, one on December 31st 2013 (22 years old) and one on December 31st 2014 (23 years old).So in 2014, the year after 2013, I will actually turn 23! It's a tricky riddle. Best way to go about it is to use trial and error with all the answers and to also keep an open mind about what "next year" means. Did you answer this riddle correctly?
YES NO
Written In Blood Riddle
On a dark, stormy Halloween night, four kids named Luke, John, Sarah and Bob walk into a haunted house during a blackout. Only one can escape. They take a staircase to the second floor, a trapdoor on the left, then go up the ladder to the right, followed by a 28-foot slide to the basement through the mouth of a Giant Panda. In one corner of the murky cellar is a chainsaw, a dagger, a rope with a noose and an electric chair. Written on the wall in blood are the words, Only one will survive choose your death! Bob takes the rope, Sarah picks up the dagger, John chooses the chainsaw and Luke uses the chair.
Who survives?
Who survives?
Hint:
The Piggy Bank Riddle
A girl liked to collect money in a piggy bank. She bought pink colored piggy bank when she was 10 years old. She put $250 in the box on each of her birthday. Her younger sister took $50 out of her piggy bank on her birthday. The girl died when she was 50 years old due to an incurable disease.
When the piggy bank was opened, it had just $500. How can that be possible?
When the piggy bank was opened, it had just $500. How can that be possible?
Hint:
The girl was born on 29 February. Thus her birthday came once in four years only while her sister was born on a normal day and celebrated her birthday every year. Thus the girl had a chance of depositing money only 10 times in 4 years through which she collected $2500 while her sister took $50 from the piggy bank every year making the total amount to be $2000. Thus when the piggy bank was opened, it had just $500. Did you answer this riddle correctly?
YES NO
YES NO
Friday Night Fun Riddle
Hint:
Black And Admired Riddle
Black we are and much admired,
men seek us if they are tired,
We tire the horse, comfort man,
guess this riddle if you can.
men seek us if they are tired,
We tire the horse, comfort man,
guess this riddle if you can.
Hint:
Black And Dirty Riddle
Hint:
A chalkboard (or blackboard). Its solid black when clean, and as you write on it with white chalk it becomes dirty. Did you answer this riddle correctly?
YES NO
YES NO
Arrayed In Black And White
I'm arrayed in black and white,
Ignore me and lose my protection,
No more than two words are in sight.
What am I?
Hint:
A Very White Ball
Hint:
White And Brittle
These are a part of your body
Sometimes theyre large, sometimes theyre little
Theyre white and they can be broken
And in some people they are brittle
What could these things be?
Sometimes theyre large, sometimes theyre little
Theyre white and they can be broken
And in some people they are brittle
What could these things be?
Hint:
Emoji Balloon Riddle
Hint: Its a song
Snow White Asks The Dwarfs A Question Riddle
Hint:
The compulsive liars are Sneezy and Dopey.
The excerpt has been taken from the story "Snow White and the Seven Dwarfs".
The seven dwarfs are Doc, Grumpy, Happy, Sleepy, Bashful, Sneezy, and Dopey.
The story shows how the dwarfs are living a peaceful life in Dwarf Woodlands and they come across Snow White. They then try to protect her from the attackers and from the poisoned apple from the Queen. Did you answer this riddle correctly?
YES NO
The excerpt has been taken from the story "Snow White and the Seven Dwarfs".
The seven dwarfs are Doc, Grumpy, Happy, Sleepy, Bashful, Sneezy, and Dopey.
The story shows how the dwarfs are living a peaceful life in Dwarf Woodlands and they come across Snow White. They then try to protect her from the attackers and from the poisoned apple from the Queen. Did you answer this riddle correctly?
YES NO
I Visit You Every Night Riddle
Hint:
3 Days Ago I Turned 18 Riddle
Hint:
Their birthday is on the 1st of January.
Here it is given that 3 days ago, it was The Narrator's birthday so he(The Narrator) was 18 years old 3 days ago and now at present the age of The Narrator is 19 years and next year he will be 20 years old, so I told you that his birthday is on 1st of January and he is 19 years old at present so according to the question asked he was 18 years old 3 days before 1st January i.e. on 29th of December and he will be 20 years old on the next year i.e. on 1st of January. Did you answer this riddle correctly?
YES NO
Here it is given that 3 days ago, it was The Narrator's birthday so he(The Narrator) was 18 years old 3 days ago and now at present the age of The Narrator is 19 years and next year he will be 20 years old, so I told you that his birthday is on 1st of January and he is 19 years old at present so according to the question asked he was 18 years old 3 days before 1st January i.e. on 29th of December and he will be 20 years old on the next year i.e. on 1st of January. Did you answer this riddle correctly?
YES NO
The Day Before Yesterday I Was 21 Riddle
Hint:
Today is 1st January
Yesterday is 31st December, your birthday, which you will be 22
The day before yesterday is 30th December, you're still 21
Let's say it's year 2020, so today is 1st January 2020, you are 22
December 31, 2020 you are 23
And then the next year, December 31, 2021 you will be 24 Did you answer this riddle correctly?
YES NO
Yesterday is 31st December, your birthday, which you will be 22
The day before yesterday is 30th December, you're still 21
Let's say it's year 2020, so today is 1st January 2020, you are 22
December 31, 2020 you are 23
And then the next year, December 31, 2021 you will be 24 Did you answer this riddle correctly?
YES NO
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