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pavalamani pragasam
Diamond Hubber
Joined: 19 Oct 2004
Posts: 9188
Location: Madurai
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 Posted: Sat Mar 13, 2010 11:16 pm Post subject: Puzzles- contd |
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Einstein's Riddle
ALBERT EINSTEIN'S RIDDLE
ARE YOU IN THE TOP 2% OF INTELLIGENT PEOPLE IN THE WORLD?
SOLVE THE RIDDLE AND FIND OUT.
There are no tricks, just pure logic, so good luck and don't give up.
1. In a street there are five houses, painted five different colours.
2. In each house lives a person of different nationality
3. These five homeowners each drink a different kind of beverage, smoke different brand of cigar and keep a different pet.
THE QUESTION: WHO OWNS THE FISH?
HINTS
1. The British man lives in a red house.
2. The Swedish man keeps dogs as pets.
3. The Danish man drinks tea.
4. The Green house is next to, and on the left of the White house.
5. The owner of the Green house drinks coffee.
6. The person who smokes Pall Mall rears birds.
7. The owner of the Yellow house smokes Dunhill.
8. The man living in the center house drinks milk.
9. The Norwegian lives in the first house.
10. The man who smokes Blends lives next to the one who keeps cats.
11. The man who keeps horses lives next to the man who smokes Dunhill.
12. The man who smokes Blue Master drinks beer.
13. The German smokes Prince.
14. The Norwegian lives next to the blue house.
15. The Blends smoker lives next to the one who drinks water.
ALBERT EINSTEIN WROTE THIS RIDDLE EARLY DURING THE 19th CENTURY.
HE SAID THAT 98% OF THE WORLD POPULATION WOULD NOT BE ABLE TO SOLVE IT.
(Happy to inform our family members have found place in that prestigious 2%!  )
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Eager to watch the trends of the world & to nurture in the youth who carry the future world on their shoulders a right sense of values. |
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PatchyBoy
Junior Hubber
Joined: 19 Feb 2010
Posts: 54
Location: Memphis / Bangalore
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| Posted: Sun Mar 14, 2010 10:45 am Post subject: |
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That one is a classic.
Here is one from me:
John and Paul live in a village. One day John decides to walk to the nearby town, but Paul wants to stay back.
So, John starts walking towards the town at 10 KMPH. After 1 hour, Paul feels lonely and decides to also go. So, he starts walking towards the town at 15 KMPH. At the sametime, Paul's dog starts running ahead of him at 20 KMPH.
The moment the dog catches up with John, it turns around and starts running back to Paul, still at 20 KMPH. The dog continues the running between the two men till Paul catches up with John.
What is the total distance travelled by the Dog?
Rajan
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Reality is merely an illusion, albeit a very persistent one. |
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pavalamani pragasam
Diamond Hubber
Joined: 19 Oct 2004
Posts: 9188
Location: Madurai
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| Posted: Sun Mar 14, 2010 11:08 am Post subject: |
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Usually I'm averse to using my grey cells in such mathematical calculations. Plain lazy! Incorrigibly so! The Einstein puzzle too I was not inclined to try at first and watched happily as our children finished solving it one by one. But when my younger sister, a doctor, too found time to solve it I had no option than to prove my mettle! I never budge out of my sloth unless properly challenged! 
Hope al the stalwart hubbers who made this thread abuzz with brilliant activity come back!
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Eager to watch the trends of the world & to nurture in the youth who carry the future world on their shoulders a right sense of values. |
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pavalamani pragasam
Diamond Hubber
Joined: 19 Oct 2004
Posts: 9188
Location: Madurai
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| Posted: Sat Mar 27, 2010 12:59 am Post subject: |
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Two from my grandsons:
1.Why do we feel tired on April 1st?
2.What is the difference between Prince Charles and a ball?
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rajraj
Seasoned Hubber
Joined: 28 Oct 2004
Posts: 1775
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| Posted: Wed May 05, 2010 11:11 pm Post subject: |
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| PatchyBoy wrote: | That one is a classic.
Here is one from me:
John and Paul live in a village. One day John decides to walk to the nearby town, but Paul wants to stay back.
So, John starts walking towards the town at 10 KMPH. After 1 hour, Paul feels lonely and decides to also go. So, he starts walking towards the town at 15 KMPH. At the sametime, Paul's dog starts running ahead of him at 20 KMPH.
The moment the dog catches up with John, it turns around and starts running back to Paul, still at 20 KMPH. The dog continues the running between the two men till Paul catches up with John.
What is the total distance travelled by the Dog?
Rajan |
Going back to high school days ! 
Assume x to be the time it takes Paul to catch up with John.
Paul walks 15x miles to catch up with John and during that time John walks 10+10x miles.
10+10x = 15x or x= 2 hours
In two hours the dog runs 40 KM
Of course, high school students would have complained that the question paper was very difficult !
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" I think there is a world market for may be five computers". IBM Chairman Thomas Watson in 1943. |
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rajraj
Seasoned Hubber
Joined: 28 Oct 2004
Posts: 1775
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| Posted: Wed May 05, 2010 11:12 pm Post subject: |
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Here is one for you:
What is special about the number 81, apart from being the square of 9 ?
_________________
" I think there is a world market for may be five computers". IBM Chairman Thomas Watson in 1943. |
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GP
Senior Hubber
Joined: 13 Mar 2009
Posts: 916
Location: Deep in my Wife's heart.
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| Posted: Mon Aug 02, 2010 7:10 am Post subject: Re: Puzzles- contd |
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| pavalamani pragasam wrote: | Einstein's Riddle
ALBERT EINSTEIN'S RIDDLE
ARE YOU IN THE TOP 2% OF INTELLIGENT PEOPLE IN THE WORLD?
SOLVE THE RIDDLE AND FIND OUT.
There are no tricks, just pure logic, so good luck and don't give up.
1. In a street there are five houses, painted five different colours.
2. In each house lives a person of different nationality
3. These five homeowners each drink a different kind of beverage, smoke different brand of cigar and keep a different pet.
THE QUESTION: WHO OWNS THE FISH?
HINTS
1. The British man lives in a red house.
2. The Swedish man keeps dogs as pets.
3. The Danish man drinks tea.
4. The Green house is next to, and on the left of the White house.
5. The owner of the Green house drinks coffee.
6. The person who smokes Pall Mall rears birds.
7. The owner of the Yellow house smokes Dunhill.
8. The man living in the center house drinks milk.
9. The Norwegian lives in the first house.
10. The man who smokes Blends lives next to the one who keeps cats.
11. The man who keeps horses lives next to the man who smokes Dunhill.
12. The man who smokes Blue Master drinks beer.
13. The German smokes Prince.
14. The Norwegian lives next to the blue house.
15. The Blends smoker lives next to the one who drinks water.
ALBERT EINSTEIN WROTE THIS RIDDLE EARLY DURING THE 19th CENTURY.
HE SAID THAT 98% OF THE WORLD POPULATION WOULD NOT BE ABLE TO SOLVE IT.
(Happy to inform our family members have found place in that prestigious 2%! ) |
German.
Yellow House: Norwegian drinks water, smokes Dunhills, and keeps cats.
Blue House: Danish drinks tea, smokes Blends, and keeps horses.
Red house: Englishman drinks milk, smokes PallMalls, and keeps birds.
White house:Swede drinks bier, smokes BlueMasters, and keeps dogs.
Green house: German drinks coffee, smokes Princes, and keeps fish. |
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Benny Lava
Devoted Hubber
Joined: 08 Apr 2009
Posts: 468
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| Posted: Mon Aug 02, 2010 7:56 am Post subject: |
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| PatchyBoy wrote: | That one is a classic.
Here is one from me:
John and Paul live in a village. One day John decides to walk to the nearby town, but Paul wants to stay back.
So, John starts walking towards the town at 10 KMPH. After 1 hour, Paul feels lonely and decides to also go. So, he starts walking towards the town at 15 KMPH. At the sametime, Paul's dog starts running ahead of him at 20 KMPH.
The moment the dog catches up with John, it turns around and starts running back to Paul, still at 20 KMPH. The dog continues the running between the two men till Paul catches up with John.
What is the total distance travelled by the Dog?
Rajan |
In one hours time the distance between John and Paul is 10 Kms. John approaches with a relative speed of 5 Kmph so it would take him 2 hours to reach John.
In 2 hours time, assuming that the dog wouldn't have to decelerate while turning back and changing directions, it would have covered 20 kmph x 2 hours = 40 Kms.
Of couse Rajraj solved it elegantly already but I did not use the dreaded alphabet 'x' so I thought I'wd post it |
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Benny Lava
Devoted Hubber
Joined: 08 Apr 2009
Posts: 468
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| Posted: Mon Aug 02, 2010 8:12 am Post subject: |
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Here is one easy questioon...
A craftsman has 5 short pieces of chains as shown below. Each piece contains 3 rings. He has to connect them all into one long chain.
OOO OOO OOO OOO OOO
Every operation that he performs on the rings is going to cost him lots of time (Note that unlinking a ring is one operation and linking it to another ring is another operation). What is the minimum number of operations needed to link the chain together and how?
For sake of explaining, you can number the rings 1 to 15 and elaborate. |
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Benny Lava
Devoted Hubber
Joined: 08 Apr 2009
Posts: 468
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| Posted: Mon Aug 02, 2010 8:20 am Post subject: |
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| rajraj wrote: | Here is one for you:
What is special about the number 81, apart from being the square of 9 ?
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Rajraj, seems like your question cannot be answered without Google or Wiki's help... Any clues please? Or else you will get all sorts of imaginative answers  |
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GP
Senior Hubber
Joined: 13 Mar 2009
Posts: 916
Location: Deep in my Wife's heart.
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| Posted: Mon Aug 02, 2010 8:25 am Post subject: |
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Unlink 4 & 6, link it to 3 & 7,
Unlink 10 & 12, link it to 9 & 13
8 operations
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CHENNAI SUPER KINGS  |
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GP
Senior Hubber
Joined: 13 Mar 2009
Posts: 916
Location: Deep in my Wife's heart.
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| Posted: Mon Aug 02, 2010 8:26 am Post subject: |
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| Benny Lava wrote: | | rajraj wrote: | Here is one for you:
What is special about the number 81, apart from being the square of 9 ?
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Rajraj, seems like your question cannot be answered without Google or Wiki's help... Any clues please? Or else you will get all sorts of imaginative answers |
Rajraj, seems like your question cannot be answered with Google or Wiki's help... Any clues please? Or else you will get all sorts of imaginative answers |
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Benny Lava
Devoted Hubber
Joined: 08 Apr 2009
Posts: 468
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| Posted: Mon Aug 02, 2010 8:27 am Post subject: |
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| Still it can be reduced GP.. our craftsman is a real miser! |
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rajraj
Seasoned Hubber
Joined: 28 Oct 2004
Posts: 1775
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| Posted: Mon Aug 02, 2010 10:03 am Post subject: |
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| Benny Lava wrote: |
OOO OOO OOO OOO OOO
|
ooo ooo ooo ooo c c c
ooo ooo ooo ooo
---c---c---c
ooooooooooooooo
6 !
_________________
" I think there is a world market for may be five computers". IBM Chairman Thomas Watson in 1943.
Last edited by rajraj on Mon Aug 02, 2010 10:08 am; edited 1 time in total |
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Benny Lava
Devoted Hubber
Joined: 08 Apr 2009
Posts: 468
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| Posted: Mon Aug 02, 2010 10:08 am Post subject: |
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| rajraj wrote: | | Benny Lava wrote: |
OOO OOO OOO OOO OOO
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ooo ooo ooo ooo o o o
ooo ooo ooo ooo
---o---o ---o
ooooooooooooooo
6 ! |
Again, you presented the solution very elegantly Rajraj sir.. 
P.S: Quote panradhukula count onnu yeriduchu? |
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