Einstein's riddle
Suppose that on a street there are five houses of different colors and in each house lives a person of different nationality. Thus, the five owners, each with their own peculiarities, drink different kinds of beverages, smoke different brands of cigarettes, and each has a pet different from the others. The riddle question is: Who owns the fish?
1. The Englishman lives in the red house.
2. The Swede has a dog as a pet.
3. The Dane drinks tea.
4. The Norwegian lives in the first house.
5. The German smokes Prince cigarettes.
6. The green house is just to the left of the white one.
7. The owner of the green house drinks coffee.
8. The person who smokes Pall Mall raises birds.
9. The owner of the yellow house smokes Dunhill.
10. The man who lives in the center house drinks milk.
11. The neighbor who smokes Blends lives next door to the neighbor who has a cat.
12. The man who owns a horse lives next door to the man who smokes Dunhill.
13. The owner who smokes Bluemaster drinks beer.
14. The neighbor who smokes Blends lives next door to the one who drinks water.
15. The Norwegian lives next to the blue house.
We repeat the question: Who owns the fish?
Re: To cheer us all up
Posted: Wed Apr 27, 2022 4:24 pm
by tallyho
Spoiler
the German in the green house at No4, smokes Prince and srinks coffee
the German in the green house at No4, smokes Prince and srinks coffee
Spoiler
Yes, and the white house is on the right and the Swede is the beer-drinking, Bluemaster-smoking, dog-owning owner.
Re: To cheer us all up
Posted: Wed Apr 27, 2022 4:49 pm
by Mr. X
Spoiler
House
yellow - blue - red - green - white
nat- norway dane eng ger swe
smokes- dun blend pall prince blmas
pet- cat horse birds fish dog
drink- water tea milk coffee beer
If you turn them into puzzle pieces its a lot easier to solve.
House
yellow - blue - red - green - white
nat- norway dane eng ger swe
smokes- dun blend pall prince blmas
pet- cat horse birds fish dog
drink- water tea milk coffee beer
If you turn them into puzzle pieces its a lot easier to solve.
Yes, I think "the old" built it thinking of a tensor of order 2. For those who do not know what a tensor is, it basically serves to have ordered elements (a table).
Re: To cheer us all up
Posted: Thu Apr 28, 2022 12:36 pm
by tallyho
We live in a world where most people think the Monster is called Frankenstein
If anyone has anymore puzzles feel free to add them here
We live in a world where most people think the Monster is called Frankenstein
If anyone has anymore puzzles feel free to add them here
Two trains leave at the same time from two stations that are 1200 miles apart. They are headed directly toward each other with no stops and no curves. Train 1 is traveling 60 mph. Train 2 is traveling 40 mph. There is a bird flying 30 mph between each train. As it reaches the nose of each train it immediately turns around and flies to the other train with no delay, ping ponging back and forth.
How far does the bird travel before the two trains collide?
Re: To cheer us all up
Posted: Thu Apr 28, 2022 12:50 pm
by tallyho
Spoiler
As the bird is slower than either train wouldnt it
get splattered on the windscreen?
We live in a world where most people think the Monster is called Frankenstein
If anyone has anymore puzzles feel free to add them here
Spoiler
the position X1 is of the train number 1, X2 respectively, Xo the initial position of the bird and taking as origin of coordinates the station number 1.
X1= 60.t
X2=1200 -40.t
The distance traveled by the bird is modulus [Xp -Xo] = [30.t], (the statement assumes that it does not lose time if it changes direction).
It doesn't matter where the bird leaves from at 100 miles, 400 etc., it doesn't matter the direction either.
60.t=1200 -40.t
100.t=1200
t=12 hours
distance the bird travels= 30.12 = 360 miles
Two trains leave at the same time from two stations that are 1200 miles apart. They are headed directly toward each other with no stops and no curves. Train 1 is traveling 60 mph. Train 2 is traveling 40 mph. There is a bird flying 30 mph between each train. As it reaches the nose of each train it immediately turns around and flies to the other train with no delay, ping ponging back and forth.
How far does the bird travel before the two trains collide?
Re: To cheer us all up
Posted: Thu Apr 28, 2022 2:39 pm
by argento
Spoiler
It is impossible for the bird to ping pong because it has a lower speed than the trains.
It is impossible for the bird to ping pong because it has a lower speed than the trains.
The problem has too much information. That's the trick.
The answer
Spoiler
Doesn't matter where the bird flies. In a circle, in a straight line, between the two trains. The trains impact at time T. so 1200=60T+40T. Solve for T and its 12 seconds. Bird travels 30mph so 12*30=360 miles. This is a too much information problem.
Re: To cheer us all up
Posted: Thu Apr 28, 2022 3:51 pm
by tallyho
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Re: To cheer us all up
Posted: Thu Apr 28, 2022 3:55 pm
by argento
There are three people on the bank of a river and they need to cross it. A cisgender man weighing 80 kg, a transgender woman weighing 45 kg and another cisgender woman weighing 35 kg. If the boat can carry a maximum of 80 kg, how many ways can they cross the river?
Re: To cheer us all up
Posted: Fri Apr 29, 2022 1:47 am
by Mr. X
How not to kill ants.
Re: To cheer us all up
Posted: Fri Apr 29, 2022 10:18 am
by tallyho
Yes saw that a while ago. First reaction from every Brit was "Im glad the dogs were ok"
