The Traffic Light Riddle
There is a traffic light at the top of a hill. Cars can't see the light until they are 200 feet from the light.
The cycle of the traffic light is 30 seconds green, 5 seconds yellow and 20 seconds red.
A car is traveling 45 miles per hour up the hill.
What is the probability that the light will be yellow when the driver first crests the hill and that if the driver continues through the intersection at her present speed that she will run a red light?
The cycle of the traffic light is 30 seconds green, 5 seconds yellow and 20 seconds red.
A car is traveling 45 miles per hour up the hill.
What is the probability that the light will be yellow when the driver first crests the hill and that if the driver continues through the intersection at her present speed that she will run a red light?
Hint:
The probability of the driver encountering a yellow light and the light turning red before the car enters the intersection is about 5.5%.
At 45 mph the car is traveling at 66 feet/second and will take just over 3 seconds (3.03) to travel the 200 feet to the intersection. Any yellow light that is in the last 3.03 seconds of the light will cause the driver to run a red light.
The entire cycle of the light is 55 seconds. 3.03/55 = 5.5%. Did you answer this riddle correctly?
YES NO
At 45 mph the car is traveling at 66 feet/second and will take just over 3 seconds (3.03) to travel the 200 feet to the intersection. Any yellow light that is in the last 3.03 seconds of the light will cause the driver to run a red light.
The entire cycle of the light is 55 seconds. 3.03/55 = 5.5%. Did you answer this riddle correctly?
YES NO
Candy Filled Treat
This is a candy filled treat
That can be found in stores
In the run-up to Christmas
And has twenty-four doors
What could it be?
That can be found in stores
In the run-up to Christmas
And has twenty-four doors
What could it be?
Hint:
A 10 Foot Rope Ladder
A 10 foot rope ladder hangs over the side of a boat with the bottom rung on the surface of the water. The rungs are one foot apart, and the tide goes up at the rate of 6 inches per hour. How long will it be until three rungs are covered?
Hint:
I Can Help You Clean Your Shirt Riddle
I can help you clean your shirt, I can fall and not get hurt. Look for me to beat the heat, up can run without my feet riddles.
Hint:
Hunter Polar Bear Riddle
A bear hunter sets out from camp and walks one mile south.
He sees a bear and is about to shoot it.
The bear grabs his gun and eats it.
The hunter runs away one mile east.
He then walks one mile north and gets back to his camp and changes his underwear.
What color was the bear?
He sees a bear and is about to shoot it.
The bear grabs his gun and eats it.
The hunter runs away one mile east.
He then walks one mile north and gets back to his camp and changes his underwear.
What color was the bear?
Hint:
He starts at at the NORTH POLE.
This means he walks south for a mile, but when he heads east for a mile he's just walking round in part of a circle, and stays one mile from the North pole. Therefore he only has to walk a mile north to get back!
So what color is the bear? It has to be a polar bear, so it's WHITE! Did you answer this riddle correctly?
YES NO
This means he walks south for a mile, but when he heads east for a mile he's just walking round in part of a circle, and stays one mile from the North pole. Therefore he only has to walk a mile north to get back!
So what color is the bear? It has to be a polar bear, so it's WHITE! Did you answer this riddle correctly?
YES NO
I Have Two Arms But Fingers None Riddle
I have two arms, but fingers none. I have two feet, but cannot run. I carry well, but I have found I carry best with my feet off the ground. What am I?
Hint:
A Prisoner Escaped From A Prison Riddle
A prisoner escaped from a prison and began to make a dash on foot. He ran for about 3 miles with intermittent stops to catch his breath until he saw a police car coming towards him. Instead of turning in the opposite direction and making a run for it, the man ran towards the police car briefly before turning and running into a nearby woods to hide. Why did the man run towards the police car?
Hint:
The man was more than halfway across a bridge when he spotted the police car, so the quickest way to leave the bridge was to run towards the police car and then turn and run into the woods to hide. Did you answer this riddle correctly?
YES NO
YES NO
A Man Comes Home From Work Riddle
A man comes home from work and says "honey I'm home". The microwave is on, defrosting a chicken dinner. From the bedroom his wife shouts "Hi sweetie, could you have a look at the microwave and tell me how much time is left?"
He immediately runs out and calls the police, informing him that his wife is in danger? Why?
He immediately runs out and calls the police, informing him that his wife is in danger? Why?
Hint:
The Man was Blind so he suspects that his wife is in some danger and thus calls the police. Did you answer this riddle correctly?
YES NO
YES NO
Peanut Butter And Cereal Riddle
There is a man who is a conductor on a train. He runs someone over so the conductor gets sentenced to death. He goes to an electric chair, the people that work there say, "it's your last day to live, what would you like to eat?" The man replies peanut butter and cereal, they turn on the electric chair and nothing happens. The next day he gets sent to a 10 times better electric chair there they say what would you like to eat and he says peanut butter and cereal, he eats the peanut butter and cereal, and they turn on the electric chair and nothing happens. The next day he gets sent to Alcatraz, they say what do you want to eat and he says peanut butter and cereal, they turn on the electric chair and nothing happens. The next day they send him to the best electric chair in the world they say what would you like to eat? He replies peanut butter and cereal, he eats a peanut butter and cereal, and they turn on the electric chair and nothing happens, they say why aren't you getting electrocuted? And the conductor says?
Hint:
I Can Be Hot I Can Be Cold Riddle
I can be hot, I can be cold, I can run and I can be still, I can be hard and I can be soft. What am I?
Hint:
Two Ships Riddle
Two ships leave the port of San Diego, both sailing for the distant shores of Japan. Each ship plans to travel the same route, spending a two-week stopover in Tokyo before returning to California. The first ship churns through the sea at 35 miles per hour throughout the entire journey. The second ship moves slower, at just 30 mph. After two weeks in Tokyo, the captain of the second ship decides to run at a faster pace, moving at 40 mph for the entire return trip. Which ship arrives in San Diego first?
Hint:
The first ship!
First ship = d/35 + d/35 = 2d/35 = 0.0571d
Second ship = d/30 = d/40 = 70d/1200 = 0.058 Did you answer this riddle correctly?
YES NO
First ship = d/35 + d/35 = 2d/35 = 0.0571d
Second ship = d/30 = d/40 = 70d/1200 = 0.058 Did you answer this riddle correctly?
YES NO
Never Resting Never Still Moving Silently From Hill To Hill Riddle
Never resting, never still.
Moving silently from hill to hill.
It does not walk, run or trot.
All is cool where it is not.
What is it?
Moving silently from hill to hill.
It does not walk, run or trot.
All is cool where it is not.
What is it?
Hint:
Two Ships Riddle
Two ships leave the port of San Diego, both sailing for the distant shores of Japan. Each ship plans to travel the same route, spending a two-week stopover in Tokyo before returning to California. The first ship churns through the sea at 35 miles per hour throughout the entire journey. The second ship moves slower, at just 30 mph. After two weeks in Tokyo, the captain of the second ship decides to run at a faster pace, moving at 40 mph for the entire return trip. Which ship arrives in San Diego first?
Hint:
The first ship!
First ship = d/35 + d/35 = 2d/35 = 0.0571d
Second ship = d/30 = d/40 = 70d/1200 = 0.058 Did you answer this riddle correctly?
YES NO
First ship = d/35 + d/35 = 2d/35 = 0.0571d
Second ship = d/30 = d/40 = 70d/1200 = 0.058 Did you answer this riddle correctly?
YES NO
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