More Riddles

A Anjali mandou-me um mail com isto porque não conseguia postar, então este é um post dela e não meu.



1-A hunter is hunting for bears. He spots one at the edge of a cliff. The cliff is w meters high. He is x meters away from the bear. He shoots at the bear. The bullet travels at y meters/second. After the bullet hits the bear, the bear falls off the cliff after z seconds.
What colour is the bear?
Keep in mind that the values for distance, velocity and time are extremely accurate.'

2-A teacher of mathematics used an unconventional method to measure time for a test lasting 15 minutes. He used just a sand-glass, which spills in 7 minutes and a second sand-glass, which spills in 11 minutes. During the whole time he turned the sand-glasses only 3 times. Explain how the teacher measured 15 minutes

3-Two trains 200 km from each other are moving at the speed of 50 km/hour towards each other. At the moment the trains are 200 km from each other a fly takes off from one train, flying straight (upon the rails) to the other train at the speed of 75 km/hour (relative to ground), bounces away from it and flies back to the first train. This is repeated till the trains crash into each other and the fly is smashed.
What distance is the fly able to fly until its death?

4-The circumference of the globe is approximately 40,000 km. If we made a circle of wire around the globe, that is only 10 metres longer than the circumference of earth, could a flea, a rabbit or even a man creep under it?

5- You awake inside a small transparent capsule sitting on the surface of Venus. From a small speaker you hear a voice that says, "We will leave you here either for a day or a year. If you choose to stay a day, we will give you $1 million. If you choose to stay a year, we will give you $2 million. Either way, you will have sufficient food and water. We will make sure the temperature is a constant 21 degrees Celsius. We will also supply cable TV."
What is your choice? (Don't let money decide your answer).

6- An advertisement had the following words:

"Attention sci-fi addicts and kids of all ages. Now you too can have your very own Photon Emitter Module. Yes, it's true! For only $39.99, you can impress your friends when you show off your Photon Emitter. It's safer than a laser and easy to install in any home. The amazing Photon Emitter Module converts electrons into photons and safely releases them for your viewing pleasure. To get yours, just send $39.99 to ..."

What are they really selling?


7- Once there was a bus conductor, who was very rude to his passengers.
One day a young girl, of around 18 years, tried to board the bus, but he didn't stop the bus. Unfortunately the beautiful young girl came under the bus and died on the spot.
Angry passengers took the conductor to the police station, who in turn took him to the court.
The judge was not at all impressed with him and gave him capital punishment.
He was taken to the electrocution chamber. There was a single chair in the centre of the room and a single banana peel at one corner of the room. The conductor was strapped to the chair and high voltage current was given to him.
But to everyone's amazement, he survived. The judge decided to set him free, and he returned to his profession.
After a few months, this time, a middle aged woman tried to board the bus but the conductor didn't stop the bus. Unfortunately, this time also, the middle aged woman came under the bus and died on the spot.
Again angry passengers took him to the police station, who in turn took him to the court. The judge took one look at the conductor and gave him capital punishment.
The conductor was taken to the same electrocution chamber where there was single chair in the centre of the room and a single banana peel at one corner of the room. He was strapped to the chair and high voltage current was given to him. This time also to everyone's amazement, he survived.
The judge decided to set him free, and he returned to his profession.
A couple of months later, an elderly gentleman tried to board the bus. This time the conductor, remembering his earlier experiences, stopped the bus.
Unfortunately the elderly gentleman slipped and died due to his injuries.
The conductor was taken to the police station and then to the court, to the same judge. Though he hadn't done anything wrong, but considering his past record the judge decided to set an example and gave him capital punishment.
The conductor was again taken to the same electrocution chamber where there was a single chair in the centre of the room and a single banana peel at one corner of the room. He was strapped to the chair and high voltage current was given to him. This time he died instantly!
The question is why didn't he die on the first two occasions, but died instantly the third time?

8- Cindy, a High School cheerleader, told her fellow cheerleaders that she was worried about changing for practice in their locker room.

It seems that she overheard the science teacher, Dr. Smith, telling the Principal that he had just invented an invisibility potion which turns whoever drinks a sip of the potion completely invisible for 24 hours.

The bad news was that someone had stolen a bottle of it from Dr. Smith's lab. Cindy was worried that the thief was a guy and that he might already be invisible, hiding in their locker room and waiting to watch them undress.

Jane, the Head Cheerleader and President of the Science Club, believed Cindy since she knew Dr. Smith was working on the potion, but told her they had nothing to worry about.

Since Jane did not steal the potion or know who had stolen the potion, how could she be so sure their privacy would not be compromised?

HINT: Jane knows a lot about human anatomy and physics



Have Fun!