-There are 10 types of

people in the world. Those who understand binary,

and those who don’t. MATT PARKER: OK, it doesn’t

really work when it’s said. But written down, the

joke kind of holds. Because if I do a 1 and

then a 0, that looks like the number 10. Because you expect it to be

a normal base 10 number. However, if this is in binary,

then this is our units column. That’s our twos column. And so this actually equals

2 in base 10. And so you expect it to

be 10, but it’s not. It’s 2, and that’s the joke. There are actually two

types of people. Those who knew this was binary,

and those who didn’t. -There are 10 types of

people in the world. Those who understand binary,

those who don’t, and those who didn’t expect this joke

to be in base 3. MATT PARKER: OK, good point,

because I guess you– OK, so it depends on the base. So if you’ve got 10, but this

time it’s in base 3, then now you’ve got a units column, and

then a threes column, and then nines, and so on. And so that in normal numbers

would be 3 in base 10. And so the same 1 and 0 in

a different base mean 3. Hence the three categories. -There are 10 types of

people in the world. Those who understand binary,

those who don’t, and– MATT PARKER: Look, you can

generalize it to any base, OK? 10 in base b is going to

equal b in base 10, OK? There’s an infinite set

of these jokes. Cut it out. -There are 10 types of

people in the world. Those who understand

hexadecimal, and F the rest. MATT PARKER: OK, I give it to

you, that one is actually quite funny. Because now in hexadecimal,

which is base 16– 10 in base 16 still does mean

there are 16 types of people. And so there’s the one category

of people who understand hexadecimal,

base 16. But then the remaining

15 in hexadecimal– 15 is just the letter F. And so

when they say F the rest, they’re saying 15

are the rest. Or I guess the joke is the

double meaning, where if you just say F in a sentence, it

means you’re implying– uh, fools. You’re saying they’re very

foolish, all the people who don’t understand hexadecimal. -Why do mathematicians confuse

Halloween and Christmas? Because Oct 31 equals Dec 25. MATT PARKER: OK, so the

joke here is that Oct 31 equals Dec 25. And the surface reading is that

this stands for October, and this stands for December. But it doesn’t. Oct can stand for the eighth

thing, because October is the eighth month in the– it was until Julius Caesar

messed with it. And Dec used to be the 10th

month, blah, blah, blah. So anyway, instead of using

these as months, you can use Oct to mean base 8. So instead of 31 being in our

normal base 10 setup, if we put it into base 8, you

have a units column. You have an eights column. And so you’ve now got one

unit and three 8’s. And three 8’s is 24, plus

a single unit equals 25. And so 31 in base 8 equals 25

in base 10, which is why one equals the other, and

why a mathematician would confuse them. BRADY HARAN: This video was

supported by audible.com. And if you’d like to download

one of their 100,000 titles for free, go to

audible.com/numberphile. I actually sampled the product

myself in the last few weeks. I downloaded a couple of

mountaineering books while I was holidaying in Nepal. I love books about mountains. These are the two I chose. They were both excellent. And it was actually really good

fun to be walking through the mountains while listening to

the book, having it sort of inside my head. So I recommend those two as

possible ones when you download your free one. That’s audible.com/numberphile,

and thanks to them for supporting

our videos. [LAUGHTER]

the last one is the best

the show EVEN stevens is so ODD.

It would be more accurate to say that F means you don't care about the rest

I'd tell you all a joke about a statistician, but you've probably heard it.

I got this one from xkcd. "On a scale from 1 to 10, what is the probability of this question being in binary?" If answer > 2, "what's an n" 'n' being the answer

2:38 Parker Square.

There are 10 types of people in this world.

Those who understand binary,

those who don't,

and those who weren't expecting a ternary joke!

It's all about that base…

Also if you put your middle finger up at someone it's basically saying "four" to them.

There are 10 types of people:

those who understand phi-base

the rest is irrational.

Jokes are awful,but the video is not.

I know the first joke but i know also the variant what mean:

there 3 types of people how could count and they how couldn`t…

or the next one is also quit funny:

Son: iΒ΄m cold

Father: go in the coner there are 90 degres

Oct is the 8th month.

sighsit used to be the 8th month until Julius Caesar messed with it.Oh no. I've stumbled into a living nightmare, a combination of math and puns.

F the rest

Foolish

sometimes I wonder why I bothered learning base 2. do I ever use it? no. if I told one of those jokes I would look like I'm trying to be smart, which I'm not, because I wasted time learning binary.

What a Save! Ya fools!

I swear I came up with the hex one on my own :/

it looks more computer guys jokes than mathematician one but I loves thems (because I understand it !! π )

Why do mathematicians always win pie eating contests? They count each pie as two!

What did the acorn say when he grew up?

Geometry.

Why is binary called "binary"?

I don't know. That's why I asked you.

I lost it when he got so confused at the oct part.

math joke:

where you said how many youtube vids are there youΒ put your head in a parker square.

classic parker square

There are 10 types of people in the world, the one who understand Hexadecimal, and F the rest.

2:36 15'd me up. October was month 8 and December month 10?????????????? It makes so much sense?????

I love how he started saying that October is the eigth month and then realised mid sentence that he was wrong

please stop the jokes and stick to math.Do the world a favour

When does one and one equal 3?

When it's a binary number!

Oct 31 == Dec 25 it'a a all about the base

How do u get drunk off root beer, put it in a square glass

8th month? Hahahahahaha

Icosodecimal (base 20) is something I was getting into…it is incredibly complex.

Ask a programmer or apparently a mathematician what 1100 = in binary and he will tell you 12. Ask an electronic tech what 1100 = in binary and he will tell you 3. Why? Because a programmer or mathematician reads numbers from high to low – left to right the same way numbers are written in most languages; ie, $5,280.00. Most electronic techs are used to viewing binary counters – a single LED for each bit – increment from left to right, low bit to high bit. A programmer will write out the bits like this; 128 64 32 16 8 4 2 1 while an electronic tech will put them in a schematic as 1 2 4 8 16 32 64 128. The pin-outs on the first binary counter ICs were more conducive to this "backwards" displaying. The 6800 and 6500 series microprocessor actually work with numbers from low bit to high bit, but then flip it around so mathematicians can understand it.

βBecause October is the eighth… was the eighth month until Julius messed it all upβ

Back off Julius, whatβd he ever do to you?

That Halloween Christmas joke made me bust out laughing at work

lulz

0:43 If those are three groups that everyone must fall in to one of, wouldn't that mean that everyone who didn't expect this joke to be in base three neither understand binary, nor don't understand binary, and that everyone who either understands, or doesn't understand binary was expecting this joke to be in base three?

fools! they're very foolish!

"f"

2:18 Shouldn't the pronunciation of "dec" actually "des"? (Because "dec" is from "decimal")

Theyβre umm foolish nice save there

There are 10 types of people in the world

Those who understand binary

Those who don't

Those who thought they were smart solving this joke with base 3

Those who thought they were smart solving this joke with base 4

Those who thought they were smart solving this joke with base 5

Those who thought they were smart solving this joke with base 6

…

And those who didn't think about infinity

βFoolsβWay to keep it g-rated.

Yeah

F O O L I S HThere are ten types of people in the world

Those who understand binary, and those who don't

And those who weren't expecting a ternary joke

Woow i realy like the oct and dec one

IT WASN'T CAESER! OMG HE RENAMED A MONTH. ROMAN CALENDARS HAD 10 MONTHS. Pet peeve just got lil worked up

2:27 My birthday!

There are 10 types of people in the world; those who understand binary, those who donβt understand binary, those who kinda understand binary, those who expected this joke to be in base 5 and those who didnβt expect this joke to be in base 5.

Ternary? Isn't that supposed to be Trinary?

Hmm, maybe not. Spellcheck likes Ternary more. I've been saying it wrong my whole life!

666.667 views…this is my life people…

Alien: There are 10 rocks.

Human: Oh, you must be using base 12.

Alien: No, I'm using base 10.

The joke is that if you are using base 12, for example, you would still represent 12 as 10.

October was already the 10th month way before Julius Caesar's time.July was called Quintilis and August was Sextilis. The strange numbering is from hundreds of years before the Roman Empire, presumably from a time when the year began in March. Those two summer months, Quintilis and Sextilis, were simply renamed in the Caesars' honor (hence why they're the only adjacent months with 31 days, for equal honor). The Julian calendar reform was much less drastic, as he was already working with a 12-month year.What did a mathematician received on his birthday?

A pi.

Come on man these are so basic

base64

"October's the eight mon- … It was until Julius messed with it" ROFL!

Ever heard the phrase "if you have to explain a joke it ain't funny"… yeah

βF is for foolish, youβre saying theyβre very foolish thatβs the joke.βYeah, foolish. Definitely."foolish"

snickersbase 3 = ternary sysytem

F means Fuk, not fools π

I couldn't stop laughing… π

There are 10 types of people in the world, those who know binary, those who do not, and aNyone besides that!

I died from the hexadecimal joke.

"And those who didn't expect this joke to be in base 3"

Y- Yeah… Foolish…

F means foolish, right …

I don't see why we need people to explain these jokes. They're all pretty

Basic

F the rest

Now I understand base numbers… THANKS NUMBERPHILE! I more than likely will need this in high school math here soon…

Hmmm. So can you explainnthe hexidecimal colour code using math?

October is simultaneously the eighth (in name) and tenth (in position) months and December is the tenth and twelfth month…

The other hidden meaning of the "non-joke" is that non-inclusive of October 31, there are 55 days to the 25th of December and that SANTA=55

Three positions for OCTAL with HEX (think about it) would be FFF which is the sixth letter of the alphabet…Could not be more obvious as to the connotations of pointing that out.

Octal written as 010 is still equal to two…Octal condensed as 000001000 is eight decimal so that is incorrect in the video.

Every system has a base 10.

2 in bin = 10. (Binary system has base 2. But 2 is 10 in binary.)

8 in oct = 10

16 in hex = 10

10 in dec = 10

They are implying that, uhh, the rest are fools.

Smiles awkwardlyππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππ

Saying

βFoolβisnβt a verb.Iβd like to be a neutron cos they donβt get charged

What's the shortest math joke?

Let Ξ΅ < 0.

F T H E R E S T

X+yi got into an argument with pi…

It was being irrational

Boom!!! 2 jokes in 1!

im mathematician if i laugh after hexadecimal joke for about 5 minutes without being able to stop?

Of course everyone know the F stands for fool!

The first joke actually doesn't work when it's said. Only when it's written.

Awesome

0:40 TERNARY

Can we please get more math jokes?

"because octoctober is the 8th month in the-, it was before Julius messed with it" – he says it like he knows the guy!

How to learn how number bases work in 5 minutes

How to count from 1 to 2?

By going just a little bit further

My favorite moment: (2:39–2:44)!

I remember watching this before I could properly speak english and not understanding anything lol

I hate it when people donβt finish their jokes because….

You expected it was a normal base but it was me Dio

at 2:42 : "October was eighth month until Julius Caesar messed with it", Actually, one of the Caesar's predecessors, King Numa Pompilius messed with it by including two months January & February before the first month of Calendar March (then known as Martius) to include 51 days beyond 31 December which were not in a 10 month calendar that existed before him.

I learned how to work with different bases in this video.

F in the chat.

F THE REST