Can you solve the giant cat army riddle? - Dan Finkel

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TED-Ed : Sign up to be emailed the solution to the bonus riddle: https://brilliant.org/tededm2s3/! Also, if you sign up for a PREMIUM membership using one of our links, you will get 20% off the annual fee. Riddle on, riddlers!

Natasha rouge Nateaschea : were the cats dead or alive

NX berry : It's a nice math puzzle but literally has nothing to do with giant cats, so the riddle could've been named anything

jaegamer : "Masters of spy-craft".....fell into what I assume is a single damn trap as a whole group.

Henry Weng : The answer to the last riddle is 7 steps. You are supposed to solve it by working backwards from 25, as this greatly reduces the number of cases. When working backwards, the operations are either +3 or /2. One can organize these cases like this: Initial: 25 Step 1: 28 Step 2: 14, 31 Step 3: 7, 17, 34 Step 4: 10, 20, 37 Step 5: 5, 13, 23, 40 Step 6: 8, 16, 26, 43 Step 7: 4, 11, 19, 29, 46 Step 7 is the first step where there is an 11, so 7 is the answer.

Ihatequests Dev : This riddle has nothing to do with cats, they just used cats as the thing you have to save, when it could of been anything.

Gavin : Move over, Bonus Meme. Bonus Riddle is the new most-loved segment of YouTube.

Darth Dogoz : Boi i woulda just pic the damn lock on the door Super spy my foot

Laura C : 5-12-19-26-31-36-6-11-16-4-2-9-3-10-17-24-29-34-39-44-49-7-14 also works :)

Anonymous : I figured out the Bonus Meme....I mean riddle first you have to find how to get to 25, and you can only do that by subtracting, since you cannot x2 to get to it. 28 is the nearest one. so you halve it, which gets you 14, then halve it again, to get 7. you may think 7 is impossible to get, but remember we can -3 as well so we go to 10, and halve it to get 5. because of this the path has been laid out. you go 11-3-3x2-3x2x2-3 to get to 25 in 7 moves.

zat1245 : These are fun because it’s just math and a bit of working backwards. You can only use the root button on perfect squares: 4, 9, 16, 25, 36, 49 but no others because the rest go above 60. We need a 2 to start. Since it’s not possible to add 5 and/or 7 to get to 2, it must have been from the square 4. Same with 4 and 16. We would only be able to get to 16 if we had a six. Well we can make a six with 36. Since 5+7=12, if we do that 3 times we’ll get there. 0 +5, +7, +5, +7, +5, +7, √, +5, +5, √, √ = 2 We can’t just add to get to 10, we need another square. We can’t use 25 because 5 has already been used. So then we use 9. To get there is easy. 2 + 7, √, +7 = 10 Now all that’s left is 14. No adding once again and there’s only one more square: 49. 10 is divisible by 5 and 49 is divisible by 7 so if we reach the common multiple of 35, we switch from +5 to +7. 10 +5, +5, +5, +5, +5, +7, +7, √, +7 = 14 All done. As for the bonus one, we can work backwards too. 25 We couldn’t have gotten to 25 by x2 so the last step must have been -3 Step 1: 28 28 can be gotten from x2 or -3 as with all evens Step 2: 14 or 31 14 produces 2 paths while 31 makes 1 Step 3: 7, 17, or 34 Step 4: 10, 20, 17, or 37 Step 5: 5, 13, 10, 40 We already have had a 10 sooner so that path is obviously wrong Step 6: 8, 16, 20, 43 Step 7: 11, 4, 8, 19, 10, 23, 46 We hit 11 through one path in seven steps. By reversing the pattern, it’s: -3, -3, x2, -3, x2, x2, -3

Nepali Dudes : Cheese has holes More cheese has more holes More holes means less cheese So more cheese is less cheese

Andre226 cz : just put a c4 on the door

Alto Bluedot : Made an Autoliker for this type of videos!!! :) (In Python, uses web libraries and automatically clicks Like)

Jonathan Johnston : My answer: put TNT on the door and blow it up.

InDstructR : Wot... I think this is the easiest riddle so far... I mean I just did this in my head! Why so easy? ;P

Justin Y. : Well, for once, we can finally achieve humanity's goal of perfecting genetically engineered catgirls.

StriKerZ : The answer to the first riddle is *literally* shown at 1:10

NINTENDO MAN : Wait, so are Schrödinger's cats dead and he is bringing them back to life, or are they alive and he is just mutating them with radiation... IDK I guess it's both

NATHANIEL TOMPKINS : All you have to do is enter those numbers, and you’ll be free But there’s a problem

Look closely at my profile pic 10 : Dr. Schrodinger. Lol I see what you did there

Saukhya Telge : How many of you couldn't solve the riddle?;)

Math Is Cool : I would want a giant cat pet, I could lay in it's fluffly lap ^w^

sia : for the extra riddle: 11 - 3 = 8 - 3 = 5 x 2 = 10 - 3 = 7 x 2 = 14 x 2 = 28 - 3 = 25 so we get the numbers: 8, 5, 10, 7, 14, 28, 25 (11 is the starting number so it doesn't count) so fewest number of moves that it can take is 7

behrad dehnadi : At 3:30 the other explanation that going for 25 is a bad idea is that when you square root the number you get 5, which was the number you started your series with, which causes duplication and that's against the rule.

Evodius Okki : Here the bonus riddle 11-3-3=5 5×2-3=7 7×2×2-3=25 So the maximum step is 7 i think

Atheist In Louisiana : This isn't a riddle about cats at all! It's a math problem! I feel cheated. Moar giant cats!

Alexandra B. : i think the lowest amount of steps could be 11, 8, 5, 10, 20, 40, 37, 34, 31, 28, 25

Julia Wburn : For the bonus riddle, you start out with 11, minus 3, which equals 8, then you double it, which equals 16, minus 3, minus 3, and minus 3 again which equals 7, then you double that, which equals 14, and then double that which will give you 28. :)

JAMSit JOLOXx : Perfect timing. I just learned how to do square roots this year and I had so much fun figuring it out _though, it did take a long time._ Oof. Edit: too lazy to do the bonus.

Brendan Risney : Second puzzle solution: 11 -3 = 8 8 - 3 = 5 5 x 2 = 10 10 - 3 = 7 7 x 2 = 14 14 x 2 = 28 28 - 3 = 25 Don't know if that's the shortest, but it's the first I thought of.

Lelouch Yagami : Bonus riddle Answer 7 steps: 11 8 5 10 7 14 28 25

Heximy : If agent epsilon can look through the surveillance to find the final outcome then how come he cant look at the sequence that dr Schrodinger put it in .-.

Timber Blue Wolf : Cats in the box wouldn't grow the box would since the cats are inside the box. And how do you know if the cats are going to attack the city? I am pretty sure that they would just sleep everywhere if somehow they did grow larger.

Marshall R. : For the bonus riddle do 11*2 then 22*2 for 44, then subtract 3 ten times to get 14. Double that for 28, then subtract 3 to get 25. :)

KvAT : I actually solved it for once, took me 15 minutes and pen-and-paper. Bonus riddle: 11 to 25, with nothing but x2 and -3. How to : 11-3=8, 8-3=5, 5x2=10, 10x2=20, 20-3=17, 17-3=14, 14x2=28, 28-3=25. That's the shortest I can get tbh.

Pheobe Owusu : This is the first one I've gotten right on my own since the green eye problem!

Prapple : I like how they have to add “the only way to solve this is through this puzzle, you can’t get around it” for like every riddle

Twilight .Wizard : Watching the World Cup AND successfully solving a riddle from ted-ed, best day ever

Siddhesh S : I reached all numbers but I got 10 twice. Tough luck! My series was: 5 10 15 22 29 36 6 11 16 4 (2) 9 3 (10) 15 20 25 32 37 44 49 (7)

Obi Wan : Villanous Dr Schrodinger. Btw was the cat in a state of superposition of dead and alive.

Billy K : Yeah I can never solve these riddles

SamTheCuber 04 : I got the second riddle: 11x2=22 -3 -3= 16x2= 32 -3 -3=26x2= 52 then subtract three till 25

jabsting46 : Bonus riddle answer is 7 -3, -3, x2, -3, x2, x2, -3.

Tofu Kingpin : First button: square root Oops guess I'll die

Ashleigh : Yeah but tell thing is now that Ray could have hit a worm or ant. I would rather have a giant cat then ant or worm

Michael Alexander : this was pretty simple, just time consuming really cant believe it worked 11, 8, 5, 10, 20, 17, 34, 31, 28, 25

scottbaino : My head hurts

Ross the Boss : I CAN’T BELIEVE I DID IT!!!! When I got all of the numbers together in that order I literally broke out in tears!!!

DarkrarLetsPlay : The long s (ſ) in 0:06 is wrong. ſ and s were not interchangeable and there were strict rules when you had to use ſ and when s.