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TED-Ed, Can you solve the secret werewolf riddle? - Dan Finkel

Can you solve the secret werewolf riddle? - Dan Finkel

You're on the trail of a werewolf

that's been terrorizing your town.

After months of detective work, you've narrowed

your suspects to one of five people:

the mayor,

the tailor,

the baker,

the grocer,

or the carpenter.

You've invited them to dinner with a simple plan:

you'll slip a square of a rare werewolf

antidote into each of their dinners.

Unfortunately, your pet goat just ate four

of the squares, and you only have one left.

Luckily, the remaining square is 50 grams,

and the minimum effective dose is 10 grams.

If you can precisely divide the square into fifths

you'll have just enough antidote for everyone.

You'll have to use a laser-cutting tool to cut up the square;

every other means available to you isn't precise enough

There are 8 points that can act as starting

or ending points for each cut.

To use the device, you'll have to input pairs

of points that tell the laser where to begin and end

each cut, and then the laser executes

all the cuts simultaneously.

It's okay to cut the square into as many pieces as you want,

as long as you can group them into 10 gram portions.

But you can't fold the square or alter it otherwise,

and you only get one shot at using the laser cutter.

The full moon is rising, and in a moment someone

will transform and tear you all apart

unless you can cure them first.

How can you divide the antidote into perfect fifths,

cure the secret werewolf, and save everyone?

Pause the video now if you want to figure it out for yourself.

Answer in 3

Answer in 2

Answer in 1

When it comes to puzzles that involve cutting and rearranging,

it's often helpful to actually take a piece of paper and

try cutting it up to see what you can get.

If we cut BF and DH we'd get fourths, but we need fifths.

Maybe there's a way to shave a bit off of a quarter to get exactly one fifth.

Cutting BE looks good at first, but that last cut

takes a off a quarter of a quarter,

leaving us with a portion of 3/16: just smaller than a fifth,

and not enough to cure a werewolf.

What if we started with BE instead?

That would also give us a quarter.

And is there a way to shave just a bit more off?

Both DG and CH look promising.

If we make one more cut, from A to F,

we may start to notice something.

With these four cuts—from B to E, D to G, F to A,

and H to C—we've got four triangles

and a square in the middle.

But the pieces that make each triangle can also be

rearranged to make a square identical to the middle one.

This means that we've split the antidote into perfect fifths!

What's interesting about this sort of problem

is that while it's possible to solve it by starting from the geometry,

it's actually easier to start experimenting and see where that gets you.

That wouldn't be as viable if the square had, say, 24 cut points,

but with just 8 there are only so many reasonable options.

You secretly dose each of the townspeople

as the full moon emerges in the sky.

And just as you do, a terrible transformation begins.

Then, just as suddenly, it reverses.

Your measurements were perfect,

and the people and animals of the town can rest a little easier.

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Can you solve the secret werewolf riddle? - Dan Finkel Kannst du das geheime Werwolf-Rätsel lösen? - Dan Finkel ¿Puedes resolver el enigma secreto del hombre lobo? - Dan Finkel Riuscite a risolvere l'indovinello segreto del lupo mannaro? - Dan Finkel 狼男の秘密の謎を解けるか？- ダン・フィンケル Ar galite išspręsti slaptą vilkolakio mįslę? - Danas Finkelis Czy uda ci się rozwiązać tajemniczą zagadkę wilkołaka? - Dan Finkel Consegues resolver o enigma secreto do lobisomem? - Dan Finkel Сможете ли вы разгадать секретную загадку оборотня? - Дэн Финкель Gizli kurt adam bilmecesini çözebilir misiniz? - Dan Finkel Чи зможете ви розгадати секретну загадку перевертня? - Ден Фінкель 您能解开狼人的秘密谜语吗？- 丹-芬克尔你能解開狼人的秘密之謎嗎？ ——丹·芬克爾

You're on the trail of a werewolf Bir kurt adamın peşindesin. Ви на слідах перевертня

that's been terrorizing your town. Kasabanıza dehşet saçan.

After months of detective work, you've narrowed Aylar süren dedektiflik çalışmasından sonra

your suspects to one of five people: Şüphelilerinizi beş kişiden birine verin:

the mayor, Başkan,

the tailor, Terzi,

the baker, Fırıncı,

the grocer, Bakkal,

or the carpenter. ya da marangoz.

You've invited them to dinner with a simple plan: Onları basit bir planla yemeğe davet ettiniz:

you'll slip a square of a rare werewolf nadir bulunan bir kurt adamdan bir kare kayacaksın ви підсунете квадрат рідкісного перевертня

antidote into each of their dinners. panzehiri her birinin yemeğine koydum.

Unfortunately, your pet goat just ate four Ne yazık ki, evcil keçiniz az önce dört tane yedi. На жаль, ваша домашня коза щойно з’їла чотири

of the squares, and you only have one left. ve sadece bir kareniz kaldı. квадратів, і у вас залишився лише один.

Luckily, the remaining square is 50 grams, Neyse ki kalan kare 50 gram,

and the minimum effective dose is 10 grams. ve minimum etkili doz 10 gramdır.

If you can precisely divide the square into fifths Eğer kareyi tam olarak beşte bire bölebilirseniz Якщо ви можете точно розділити квадрат на п'яті частини

you'll have just enough antidote for everyone. herkese yetecek kadar panzehiriniz olacak.

You'll have to use a laser-cutting tool to cut up the square; Kareyi kesmek için bir lazer kesim aleti kullanmanız gerekecek;

every other means available to you isn't precise enough elinizdeki diğer tüm araçlar yeterince hassas değil

There are 8 points that can act as starting Başlangıç olarak kullanılabilecek 8 nokta vardır

or ending points for each cut. veya her kesim için bitiş noktaları.

To use the device, you'll have to input pairs Cihazı kullanmak için çiftleri girmeniz gerekir

of points that tell the laser where to begin and end lazere nerede başlayıp nerede biteceğini söyleyen noktalar

each cut, and then the laser executes her bir kesim ve ardından lazer

all the cuts simultaneously. tüm kesikler aynı anda.

It's okay to cut the square into as many pieces as you want, Kareyi istediğiniz kadar parçaya bölmenizde bir sakınca yoktur,

as long as you can group them into 10 gram portions. Onları 10 gramlık porsiyonlar halinde gruplandırabildiğiniz sürece.

But you can't fold the square or alter it otherwise, Ancak kareyi katlayamaz veya başka bir şekilde değiştiremezsiniz, Але ви не можете скласти квадрат або змінити його іншим чином,

and you only get one shot at using the laser cutter. ve lazer kesiciyi kullanmak için sadece bir şansınız var.

The full moon is rising, and in a moment someone Dolunay yükseliyor ve birazdan birisi

will transform and tear you all apart hepinizi dönüştürecek ve parçalara ayıracak

unless you can cure them first. Tabii önce onları tedavi edemezseniz.

How can you divide the antidote into perfect fifths, Panzehiri nasıl tam beşliye bölebilirsin?

cure the secret werewolf, and save everyone? Gizli kurt adamı tedavi edip herkesi kurtarmak mı?

Pause the video now if you want to figure it out for yourself. Kendiniz anlamak istiyorsanız videoyu şimdi duraklatın.

Answer in 3 3'te cevapla

Answer in 2

Answer in 1

When it comes to puzzles that involve cutting and rearranging, Kesme ve yeniden düzenlemeyi içeren bulmacalar söz konusu olduğunda, Коли справа доходить до головоломок, які включають розрізання та переставляння,

it's often helpful to actually take a piece of paper and bir kağıt parçası almak ve

try cutting it up to see what you can get. Ne elde edebileceğinizi görmek için kesmeyi deneyin.

If we cut BF and DH we'd get fourths, but we need fifths. BF ve DH'yi kesersek dördüncüyü alırız ama beşinciye ihtiyacımız var. Якщо ми скоротимо BF і DH, ми отримаємо четверті, але нам потрібні п’яті.

Maybe there's a way to shave a bit off of a quarter to get exactly one fifth. Belki de tam olarak beşte birini elde etmek için çeyreği biraz tıraşlamanın bir yolu vardır. Можливо, є спосіб скоротити чверть, щоб отримати рівно одну п’яту.

Cutting BE looks good at first, but that last cut BE'yi kesmek ilk başta iyi görünüyor, ama o son kesim

takes a off a quarter of a quarter, bir çeyreğin çeyreğini alır,

leaving us with a portion of 3/16: just smaller than a fifth, geriye 3/16'lık bir kısım kalıyor: beşte birden biraz daha küçük,

and not enough to cure a werewolf. ve bir kurt adamı iyileştirmek için yeterli değil.

What if we started with BE instead? Bunun yerine BE ile başlasak nasıl olur?

That would also give us a quarter. Bu da bize bir çeyreklik verir.

And is there a way to shave just a bit more off? Ve biraz daha tıraşlamanın bir yolu var mı?

Both DG and CH look promising. Hem DG hem de CH umut verici görünüyor.

If we make one more cut, from A to F, A'dan F'ye bir kesik daha yaparsak,

we may start to notice something. bir şeyler fark etmeye başlayabiliriz.

With these four cuts—from B to E, D to G, F to A, Bu dört kesikle - B'den E'ye, D'den G'ye, F'den A'ya,

and H to C—we've got four triangles ve H'den C'ye- dört üçgenimiz var

and a square in the middle. ve ortada bir kare.

But the pieces that make each triangle can also be Ancak her üçgeni oluşturan parçalar aynı zamanda

rearranged to make a square identical to the middle one. Ortadaki ile aynı kareyi oluşturmak için yeniden düzenlenmiştir.

This means that we've split the antidote into perfect fifths! Bu, panzehiri mükemmel beşliklere böldüğümüz anlamına gelir!