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Riddles and Answers © 2017
Fastest Horse Riddle
The London Racetrack needs to submit its 3 fastest horses to the Kentucky Derby out of 25 horses. However, all of their information was lost and they don't know any of the horse's times. Similarly, they all look identical so they can't remember who's fastest.
They can only race 5 horses at once, so what is the fewest number of races they can conduct to find the 3 fastest horses?
They can only race 5 horses at once, so what is the fewest number of races they can conduct to find the 3 fastest horses?
Hint:
First you divide the 25 horses into 5 groups of 5. You conduct the 5 races and take all of the fastest horses in those races and have a race with them, giving you the fastest horse. Then you take the remaining 24 horses (excluding the fastest) and remove the 4th and 5th horses in the first set of 5 races (since they definitely have 3 horses faster than them), leaving you with 14 horses. Next you can remove all of the horses that were beat in the preliminary race by the horses that got 4th and 5th in the championship race, leaving you with 8 horses. Finally, you can remove the horses that remain that lost to the 3rd place horse in the final race in the preliminary race and the horse that got 3rd in the preliminary to the horse that got 2nd in the championship race, leaving you with 5 horses.
You can then run a final race where the 1st and 2nd place horses are the 2nd and 3rd fastest. Then you know the 3 fastest horses. Did you answer this riddle correctly?
YES NO
You can then run a final race where the 1st and 2nd place horses are the 2nd and 3rd fastest. Then you know the 3 fastest horses. Did you answer this riddle correctly?
YES NO
Rope Burn Riddle
You have two ropes. Each rope takes one hour to burn. These ropes are not identical, nor are they uniform; i.e. it does not necessarily take half an hour for half the rope to burn (if you have trouble visualizing this, imagine a rope of varying thickness across its length). With only these two ropes and a way to light them, how do you measure out 45 minutes?
Hint: You can light multiple ends and/or multiple ropes at the exact same time.
Light both ends of one rope, and only one end of the other rope. This will cause the first rope to burn out in 30 minutes. When the first rope burns out, there will be 30 minutes left on the second rope. So then, light the other end of the second rope, and the rest of it will burn out in 15 minutes. 30 + 15 = 45 minutes. Did you answer this riddle correctly?
YES NO
YES NO
Fox Rabbit Cabbage
A merchant has a fox, a rabbit, and a head of lettuce and sits on the edge of a river. He has a small raft capable of carrying only himself and one item at a time, but without his supervision the fox will eat the rabbit, and the rabbit will eat the lettuce. How can he successfully transport all goods from one side of the river to the next without losing the lettuce or rabbit? The dilemma, of course, is true regardless of which side of the river they are on and there is no other way across.
Hint:
First the farmer takes the rabbit across and returns to the fox & cabbage. Next, the farmer takes the cabbage, but when he arrives to the other side with the rabbit, he leaves the cabbage and takes the rabbit back on the raft with him to return and get the fox. He exchanges the rabbit for the fox and returns to drop the fox off with the cabbage, and finally goes back to get the rabbit. Did you answer this riddle correctly?
YES NO
YES NO
Puddle On The Ground
If a the police were investigating a suicide and all there was was a man hanging from the roof a collapsed wood box and a puddle on the ground and a match found inside the box how did this man die.
Hint:
He was standing on a box with ice in it he threw a match in the hole in the box it eventually melted the ice and made the wooden box collapse Did you answer this riddle correctly?
YES NO
YES NO
In The Bathroom
If you go to the UK
British people call them loos
You find them in the bathroom
They're for number ones and twos
British people call them loos
You find them in the bathroom
They're for number ones and twos
Hint:
Three Rats Riddle
Three rats are sitting at the three corners of an equilateral triangle. Each rat starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the rats collide?
Hint:
So lets think this through. The rats can only avoid a collision if they all decide to move in the same direction (either clockwise or rati-clockwise). If the rats do not pick the same direction, there will definitely be a collision. Each rat has the option to either move clockwise or rati-clockwise. There is a one in two chance that an rat decides to pick a particular direction. Using simple probability calculations, we can determine the probability of no collision. Did you answer this riddle correctly?
YES NO
YES NO
Getting Put Into Shoes
This is a body part
That can be found in twos
It is a type of length
And gets put into shoes
They are?
That can be found in twos
It is a type of length
And gets put into shoes
They are?
Hint:
Laying An Egg Riddle
Hint:
It didn't roll since when did roosters start laying eggs? Did you answer this riddle correctly?
YES NO
YES NO
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