Think of a Number 1978 Complete - Johnny Ball Show by OldTVShow - Dailymotion

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00:30Thank you very much.

00:34Hello and welcome to Think of a Number.

00:38You there.

00:39Think of a number between 1 and 10.

00:417.

00:42Correct.

00:44In this programme, I'm Johnny Baller certainly,

00:46and in this programme we hope to show you how to flex your flexions,

00:49pop your pop-ups,

00:50and even how to double your money.

00:52And I don't mean just fold your pound notes in half.

00:55Also, we'll be exploring the amazing world of numbers.

01:00I think one of the most amazing things about numbers

01:02is the way people seem to be fascinated just by a few numbers.

01:07For instance, before we started the programme,

01:09we played a game of bingo with our studio audience.

01:14So, it's the first person with five numbers on their card.

01:19Eyes down, look in.

01:21All the twos, two little ducks.

01:2422.

01:26Downing Street, number 10.

01:29All the eights, two fat ladies.

01:3388.

01:35Oh, there's a lot of numbers coming out.

01:37On look at the sun, 1 and 3, 13.

01:42Sherwood Forest, all the trees.

01:4533.

01:48On its own, knock at the door.

01:51It's number 4.

01:535 and 2, 52.

01:58Yeah!

02:02Everyone a winner!

02:03Congratulations, because you've won the star prize.

02:05You've all won a free walk to Penzance.

02:09Now, it was a swizz, of course it was,

02:11but it was just to show how fascinating people can be with numbers.

02:14You're all saying, here's another, I've got another,

02:16I've got another, there's only a few numbers.

02:17The fascinating thing about numbers is,

02:20or the amazing thing about numbers is that we're surrounded by them,

02:23yet we're still fascinated by them.

02:25I think we couldn't, we couldn't do without them, you know.

02:28Just imagine what the world would be like without numbers.

02:32Can you imagine what the 9 o'clock news would be like without numbers?

02:40Good evening, and here's the news for when the long hand is pointing straight up

02:43and the short hand is pointing straight across.

02:45Today, the Prime Minister issued a statement from his home in Downing Street.

02:50It's up a bit on the right.

02:52He said that from next week,

02:53the price of butter will go up by several pence a lump,

02:56sweets will go up by a few pence a handful,

02:58and petrol will go up by ever such a lot.

03:01A lady in Edinburgh today gave birth to some babies.

03:05Now, although it's common for a lady to give birth to a baby and another one,

03:08and one often hears stories of ladies giving birth to a baby and another one and another one,

03:14and another one, and another one, and another one, and another one, and another one.

03:21Football.

03:22Oh, just a moment.

03:24Hello?

03:25Yes, fine.

03:27And another one.

03:30Football, here are some late results.

03:32Arsenal, no goals.

03:34Leeds United, some goals.

03:35Aston Villa, some goals.

03:38Liverpool, some more goals.

03:40Manchester United, a lot of goals.

03:42Newcastle United, not quite so many goals.

03:45Oh, thank you.

03:46Here's a flash.

03:47We've just heard that the high jumper, Ivor Springyleg,

03:50has broken the world record high jump by jumping...

03:54that high.

03:56The previous world record was that high, so he's beaten it by that much.

04:01And that's all from the news desk.

04:07So you see...

04:09Oh, thank you.

04:15So you see, we're surrounded by numbers, and we can't live without them.

04:21The thing is...

04:22The other thing is that numbers are so simple to understand.

04:25When you think that all numbers are made up of just ten digits.

04:28One, two, three, four, five, six, seven, eight, nine, and nought.

04:32And the man who thought of this system, whoever he was,

04:35we don't know who he was,

04:36we only know that he had ten fingers.

04:38One, two, three, four, five, six, seven, eight, nine, ten.

04:42And he devised this system so that he could count on his fingers.

04:46And today we can count on our fingers,

04:48unless, of course, we're wearing boxing gloves.

04:50Or unless we have a pocket calculator.

04:54Because today we have pocket calculators to make arithmetic simpler.

04:57For instance, can somebody give me two numbers between one and ten?

05:01Seven and nine.

05:02Seven and nine.

05:04Fine.

05:04So if we want to multiply seven and nine on a pocket calculator,

05:08you simply go, seven times nine equals...

05:12Just get it out.

05:16347.

05:16You see, that's the trouble with a pocket calculator.

05:19Once you put it in your pocket, it's useless.

05:21That's why today we have, in the studio, over here,

05:25in this cupboard, a pocket calculator designed.

05:28Oh!

05:28So that it won't fit in a pocket.

05:36You see?

05:37And we switch it on with the switch there.

05:38And we don't have to count on our fingers.

05:42With a seven...

05:43Multiplying a seven times a nine,

05:45we simply punch it up on the calculator.

05:47Seven times nine.

05:49And the little man inside counts up on his fingers.

05:52And we get...

05:53Equals 63.

05:54You're working well, George.

05:58Of course, it's not really a little man inside.

06:00It couldn't be.

06:01It's quite a big man.

06:04Now, actually, the working brain of a calculator,

06:08this one here and this little one here,

06:11is about that big.

06:12That's called a chip.

06:14It costs about 50p to make, that's all.

06:16And that's the brain that makes calculators work.

06:20However, if George gets his fingers tangled up,

06:23or his batteries go flat,

06:25or his chips go cold,

06:26we have over here...

06:30This is the one.

06:32A show of hands.

06:37There we are.

06:38We always keep these handy.

06:41They're quite armless.

06:43Hey!

06:44Do you know where a general keeps his armies?

06:46Up his sleeve is.

06:48Thank you very much.

06:49Now, did you know that you can make...

06:51do multiplication sums on your fingers?

06:53For instance, if you want to multiply 7 by 9,

06:56you imagine each hand has got numbers on the fingers.

07:00Hold your hands in front of you,

07:02and just think that the little finger has got a 6 on it,

07:05then a 7, 8, 9, to the thumb, which has a 10.

07:09Right?

07:10And you want to multiply 7 by 9.

07:12Well, you make a 7 finger touch a 9 finger.

07:15All right?

07:17We've got a line to show that they're on a line.

07:19You count those two fingers and all those below.

07:22So it's 1, 2, 3, 4, 5, 6.

07:25And you write the 6 down.

07:26Then, you count all the fingers above those touching,

07:34but you count them on each side.

07:36There's 1 on that side,

07:37and 1, 2, 3 on this side.

07:39And you multiply those two numbers together.

07:411 times 3 equals...

07:433.

07:43And the answer is 63,

07:48which is the same answer we've got there.

07:50Now, this only works with numbers between 6 and 10,

07:54quite small numbers.

07:56And people are usually happier with small numbers.

07:58It's amazing how quickly one can get into very large numbers.

08:04We have here a calendar.

08:06It's February.

08:07You can tell it's February because there are 28 days.

08:10Do you know how many months I've got 30 days?

08:15Everyone.

08:1611.

08:17Correct.

08:1811 months I've got 30 days.

08:20You've got to get up early if you want to get out of bed.

08:22Now then.

08:23On the 6th of February,

08:25my doctor told me to take regular exercise for seven days running.

08:29And then to skip a week.

08:33Now, the reason we've got this calendar

08:35is because we heard a story of a boy

08:37whose school are going on an outing to the Silver Jubilee in June.

08:41And he thought,

08:42I'd better save up my money.

08:43If I saved a penny a day,

08:45I might have enough.

08:46So he counted the days

08:47and found it was 128 days

08:49till the outing in June.

08:51So that would only be,

08:52how much?

08:53£1.28.

08:54Right.

08:55Wouldn't be enough.

08:56He'd need a fiver at least.

08:58So he went to his dad.

08:59Now, his dad worked on an airline.

09:01He didn't work at an airport.

09:02He worked at a garage.

09:03And when a car came in with a flat tyre,

09:05he got the airline

09:05and put it out.

09:08So he knew all about inflation.

09:11And so did the boy.

09:12Because he said,

09:12Dad, would you give me a penny today,

09:14being the 1st of February,

09:15and top pence the next day,

09:16and four pence the next day,

09:18and eight pence the next day,

09:19and so on,

09:20so that I can save up for the Jubilee?

09:23And his father thought,

09:24it seems a good system.

09:26He said,

09:26all right,

09:27I'll do it,

09:27but I will only do it

09:28to the end of February.

09:30That's 28 days.

09:32And the boy was a bit worried.

09:33He thought,

09:33oh,

09:33I don't know if I'll have enough.

09:35Do you think he would have enough

09:36in 28 days?

09:36Yes.

09:37Do you think he'd have more?

09:39Yes.

09:39A lot more.

09:40Well, we'll just see.

09:41On the 1st day,

09:42his father would have to give him a penny,

09:43then top pence,

09:44then four pence,

09:45then eight pence,

09:46then 16 pence.

09:47He's not doing bad,

09:48is he?

09:49On the 6th,

09:50he'd get 32 pence,

09:5164 pence,

09:52128 pence,

09:54256 pence,

09:55512 pence.

09:58But it's only the 10th of February.

10:00And 512 pence,

10:01it's 5 pounds,

10:0212 pence,

10:03on that day alone.

10:04And his father would already have given him

10:05another 5 pounds

10:07from the other days.

10:08So he's got 10 pounds.

10:09The next day,

10:10another 10 pounds,

10:12then 20 pounds,

10:13then 40 pounds,

10:1480 pounds,

10:15160 pounds,

10:16310 pounds,

10:17640 pounds,

10:18until by the 28th of February,

10:19his father would have to give him,

10:21on that day alone,

10:22two and a half million pounds.

10:25And he would already have given him

10:27another 2 and a half million pounds

10:29in bits from the other days.

10:31And his father could think himself,

10:33look,

10:33it wasn't a leap year,

10:34because on the next day,

10:35the 29th,

10:35he'd have to give him another

10:365 million pounds.

10:38And if they carried on that system,

10:40for the 128 days,

10:42up to the outing,

10:43the silver jubilee,

10:44his father would have to give him

10:45all these pounds.

10:47and 27p.

10:59Now let's face it,

11:00if you had all that money to save,

11:02you wouldn't need to save,

11:03would you?

11:04From something with a lot of numbers,

11:06now to something with a lot

11:07of letters.

11:09I'm not the regular grave digger,

11:23I'm not the regular grave digger,

11:37I'm just filling in for somebody else.

11:39This is a replica

11:43of the Monmouth tombstone

11:45to be found in the churchyard

11:47of St. Mary the Virgin,

11:48Monmouth, South Wales.

11:51Covered in letters, you see.

11:53All looks gibberish, doesn't it?

11:55Unless you know how to read it.

11:57For instance,

11:57if you start with a H in the middle

11:58and read across,

12:00it says,

12:01here lies

12:02John Rennie.

12:05Starting from the middle

12:06and reading down,

12:07it also says,

12:08here lies

12:09John Rennie.

12:11If you read up from the middle,

12:12it says,

12:13here lies

12:14whichever way you go.

12:16John Rennie.

12:17If you read across from the middle,

12:19it says,

12:19here lies

12:20backwards.

12:21John Rennie

12:22upside down.

12:24In fact,

12:25it doesn't matter

12:25which way you go.

12:26If you start at the middle

12:27and head for one of the corners,

12:28even if you zigzag,

12:30it says,

12:30here

12:31lies

12:33John

12:35Rennie.

12:37How many ways

12:40do you think it spells

12:41here lies

12:42John Rennie?

12:43Any guesses?

12:45The answer is

12:4645,760 ways

12:50of saying

12:51here lies

12:52John Rennie.

12:54And that's not all lies.

12:56That's a grave fact.

12:57Thank you very much.

13:20Thank you very much.

13:23Any more tickets?

13:24We've got one.

13:25Lovely.

13:26Any more?

13:27There we are.

13:27We've all got tickets.

13:29We've all got tickets.

13:30Yes,

13:30that was quick.

13:31I'm a lightning conductor.

13:34Right-o.

13:35Now,

13:35I don't need a hat.

13:37Have you ever been on a bus

13:38and had a ticket

13:40and started doodling?

13:42Yes.

13:43It's best to doodle

13:44with a long ticket.

13:45You can make an endless ticket.

13:46Do you know how to make

13:47an endless bus ticket?

13:49Just fasten the two ends up

13:50and you've got a hoop.

13:52You have a lot of fun

13:52with a couple of hoops.

13:53Sort of hoop, hoop, hooray!

13:56We gave some hoops

13:58to the people on the back row

13:59before we started.

14:00We've all got a couple of hoopsies.

14:01Could you all throw them to me, please?

14:03Ready?

14:03One, two, three, throw!

14:08Hoops.

14:10Now,

14:11some people over here

14:12have got hoops.

14:13Could you throw yours?

14:14One, two, three, throw!

14:16Hey!

14:17There's one!

14:17Oh!

14:18Look at one.

14:20Smashing.

14:21See, all you need

14:21is two hoops

14:22and a drinking straw

14:23and you can make a glider.

14:25Let's get this one as well.

14:27You make a glider

14:27that has got the advantage

14:30of flying straight,

14:32I think.

14:33Well, nearly straight.

14:35Thank you very much.

14:40Get the hoops now.

14:42You've got your strip of ticket.

14:43Now,

14:44can anyone make

14:46a five-sided flat figure

14:48with a piece of ticket?

14:50A pentagon.

14:51A five-sided flat figure.

14:54Have a try.

14:55It's very difficult

14:55if you don't know how to do it.

14:57But if you know how to do it,

14:58it's easy.

14:59And I know how to do it

15:00because I read it in a book.

15:02So I've wangled it.

15:03Anybody?

15:04Let me show you.

15:05All you do

15:05is just tie it in a knot.

15:09Right over there.

15:12Pull the end through.

15:13And you have to do it gently

15:14and then squash it flat, slowly.

15:17And you find

15:20on a good day

15:22that you make

15:24a pentagon.

15:25Not a polygon.

15:26That's a dead parrot.

15:29Pentagon.

15:31Five-sided.

15:32That's right.

15:32And if you fold

15:34one other side

15:35round the back

15:36and hold it up

15:37to a strong light,

15:40you see something else?

15:42We've got one

15:43just over here.

15:45Have a look.

15:46There we are.

15:53There we are.

15:55There's your pentagon.

15:57Looking through it,

15:58you can see

15:58a five-pointed star.

16:02It's a pentangle.

16:06It's amazing.

16:08With just a little bit

16:09of ticket.

16:09Now,

16:12we started

16:13into paper folding.

16:15And once you start

16:16in paper folding,

16:17you never know

16:18where it's going to lead next.

16:19This is a flexagon.

16:21It's a hexaflexagon.

16:22It's got six sides.

16:24One side,

16:25two sides.

16:26That's mark three.

16:27That's mark six.

16:30That's mark one.

16:33Hang on.

16:34Can't find my way through there.

16:35Six sides.

16:36And that's made

16:37with a straight strip of paper.

16:38You could have made that

16:39with the bus tickets

16:40you've got in your hand.

16:41This is a three-dimensional one.

16:45And it's...

16:46I'll turn it that way.

16:47And it opens up

16:48like a kaleidoscope.

16:55Isn't that amazing?

16:56There you are.

16:57Have a look at that.

16:59Now,

16:59once you're starting

17:00paper folding,

17:02as I say,

17:02you never know

17:03where it's going to lead

17:03because it's used

17:04in industry.

17:07Frequently used in industry.

17:09for packaging.

17:11I've got something here.

17:12Watch this.

17:14It's a round ball.

17:15Look at that.

17:17And we've got

17:18a pyramid here.

17:19Can you come down here?

17:21And stand there.

17:22Could you

17:22pull this out?

17:24Can I have

17:25me elastic band?

17:26Yes.

17:26And don't let go

17:27the pyramid.

17:28I've got something else.

17:30Now,

17:31that's perfectly flat.

17:33What do you think

17:33is going to be inside?

17:35Watch it.

17:35Don't let go.

17:40Look at that.

17:41A liner

17:42or a cargo ship

17:44with a crane

17:44that works.

17:47With another crane

17:48at the back

17:48that works.

17:48There's even furniture

17:49inside.

17:50There's a bridge,

17:51a mast,

17:52everything that a ship's got.

17:54And it all folds

17:55absolutely flat.

18:00Don't open the pyramid.

18:03Go on,

18:03then.

18:03Open the pyramid.

18:04Oh,

18:09well,

18:09while you're

18:10putting all those back,

18:11we'll have a look

18:14at just one pyramid.

18:24This is the

18:25Great Pyramid

18:26of Giza,

18:27built in Egypt

18:28by the ancient Egyptians.

18:30The ancient Egyptians

18:31were the first people

18:32to understand deeply

18:34some of the more

18:35involved concepts

18:36of mathematics.

18:38In fact,

18:39some of the things

18:39they understood

18:40we still don't

18:41quite understand today.

18:44This pyramid

18:45is well over

18:46100 metres high.

18:49And there is more stone

18:50in this one pyramid

18:52than in all the cathedrals,

18:54churches and chapels

18:55built in Great Britain

18:56in the last 2,000 years.

19:01In the middle of the pyramid

19:02there's quite a small chamber.

19:05When it was opened up

19:07they discovered

19:07that the things

19:08inside that chamber

19:09have been preserved

19:10for much longer

19:11than anyone

19:12could have believed.

19:15In recent times

19:17men have built

19:18copies,

19:20scale models

19:21of this pyramid

19:21and they've put

19:23things inside them

19:25in the same position

19:26as the chamber

19:27inside this pyramid.

19:28About one third

19:29of the way up

19:30in the middle.

19:31And they found

19:32that things like

19:33liver,

19:33eggs,

19:34all kinds of food

19:34have preserved themselves

19:36for much longer

19:37than is normal.

19:39And in 1959

19:40a man in Czechoslovakia

19:42built quite a small

19:43model of this pyramid.

19:46Placed it with one edge

19:47pointing north

19:48and inside

19:50a third of the way up

19:51he placed a razor blade

19:53with the edge

19:54on a line

19:54from west to east.

19:57And he was amazed

19:57to discover

19:58that the razor blade

19:59sharpened itself.

20:05While we're in Egypt

20:06here's another

20:07Egyptian picture.

20:12This picture,

20:14an ancient Egyptian picture

20:15was painted

20:16by an ancient Egyptian.

20:17Do you notice

20:20anything strange

20:20about the people?

20:22They're flat.

20:23They're all standing

20:24with their feet like that,

20:25their arms like that,

20:26they're all facing that way,

20:27but their shoulders

20:28are turned that way.

20:31It's impossible.

20:32Come and stand there.

20:33You can come.

20:34And you.

20:34Can you come and help?

20:36Try and stand like that.

20:38Can you stand on this line?

20:39You stand over there

20:40and you stand there.

20:41What's your name?

20:41Helen.

20:42Helen.

20:43And you're?

20:43You're Mohammed.

20:44Okay.

20:45Fine.

20:46Stand like that.

20:47Now put your hands

20:48like that.

20:49Can you see?

20:50And then,

20:50face that way

20:51and at the last minute

20:53turn your shoulders

20:53facing the camera.

20:56You fall over.

20:58Oh, you don't.

20:58You must be Egyptian.

20:59I'm Egyptian.

21:00I brought your mummy

21:01with you.

21:02Ha!

21:03That was very good.

21:05The picture, you see,

21:06is painted in two dimensions only.

21:08It's got height,

21:08it's got width,

21:09it's got no depth.

21:10It's flat.

21:10And all the people

21:12are standing flat.

21:13Can you imagine

21:14what it would be like

21:14living in a flat world

21:16where the world

21:17and everything in it

21:18was flat.

21:19Come with me.

21:20Come with me.

21:28In 1907,

21:30a man called Hinton

21:31wrote a book

21:32and it was all about

21:33a flat world.

21:35It was a round world,

21:36but it wasn't round

21:37in that direction

21:38as our world is.

21:39It was flat

21:40and all the people

21:41were flat

21:43and they lived

21:44on the edge

21:45like that.

21:46It was a big world,

21:47of course,

21:48and they lived

21:49like that.

21:52But he found

21:53it was extraordinary

21:54living in a flat world

21:55because

21:56if you imagine

21:57you're flat

21:57facing that way,

21:59you can't turn

22:00and face that way

22:01because your nose

22:02has to come out

22:03to go back.

22:04So whatever way

22:06you're facing

22:07when you're born,

22:08that's the way

22:09you're going to stay

22:09for the rest of your life.

22:11Problem, wasn't it?

22:12So what he did,

22:13he had all the men

22:13facing that way

22:14and all the women

22:15facing that way

22:15and that solved

22:17quite a few problems.

22:19It didn't solve

22:21this problem.

22:22How do they pass

22:23each other?

22:24You see,

22:24one can't get out

22:25of the way

22:26to let the other

22:26one go past.

22:28So what they had to do

22:29is they had to

22:29climb over each other.

22:31So he made a law

22:32that would be courtesy

22:33for men to lie down

22:35and the women

22:35used to trample over them.

22:37Which is really

22:38what happens today,

22:39isn't it, fellas?

22:40The other amazing thing,

22:42think about this.

22:43Once you're going

22:44in one direction,

22:45you've got to come back,

22:47backwards,

22:48without looking

22:49where you're going.

22:50You'd always be

22:50bumping into people.

22:51Boom!

22:52Oh, I'm terribly sorry,

22:53I wasn't watching

22:53where I was coming back from.

22:56And the other fellow

22:56would say,

22:57oh, you're always doing that,

22:58you get my back up.

22:59I beg your pardon?

23:00Back up!

23:01Oh, right.

23:01Boom!

23:02Oh, sorry,

23:02I wasn't watching

23:03where I was going back from.

23:04They'd be bumping

23:04into each other

23:05all the time.

23:06What about the houses?

23:07Well, they wouldn't live

23:07in houses,

23:07they'd live in flats,

23:08wouldn't they?

23:10But the doors,

23:11you see,

23:12the doors couldn't open

23:12like that,

23:13so the doors

23:13would have to hinge

23:14up and down,

23:15like that.

23:16But just think,

23:17if somebody opened

23:18the front door

23:18at the same time

23:19that somebody opened

23:19the back door,

23:20the house would fall down.

23:22So it'd be an amazing world

23:24of narrow-minded people

23:25and flat-footed people

23:27all bending over backwards

23:28and clambering over each other

23:29and saying things like,

23:30you scratch my back

23:31and I'll scratch your front.

23:33Luckily,

23:34we today live

23:35in a three-dimensional world

23:36and we now have

23:38three-dimensional pictures.

23:40here is a glass plate.

23:47It's ordinary glass

23:48in a frame.

23:53But watch what happens

23:54to the glass

23:55when I shine

23:56some light onto it.

23:58The light is coming

23:59from this

24:00because this

24:01is a ray gun.

24:03It's called

24:07a laser

24:07and it produces

24:09very, very strong light

24:11and it shines it

24:12in a very, very thin beam.

24:15We've got a lens

24:16at the end here

24:17which fans the light out.

24:20There it is.

24:22It's shining on my hand.

24:24And it's not hot.

24:25Some lasers are very hot

24:26but this one

24:27isn't as hot

24:28as a light bulb.

24:29It's quite cool.

24:31And look

24:32what happens

24:33to the plate

24:33when the light

24:35shines onto it.

24:41That's a picture

24:42of a glass apple.

24:44But it's not

24:49a flat picture.

24:50It's three-dimensional.

24:53As the camera

24:54moves around

24:55you can see

24:57that we're seeing

24:57another side

24:58to the apple.

25:06Now the image

25:07isn't coming

25:08along the ray

25:09of light

25:10like a cinema projector.

25:12The image

25:13like a photograph

25:14is on the glass plate.

25:18As the camera

25:18moves up and down

25:19you can see

25:21if it moves up

25:23you can see

25:24more of the top.

25:27A three-dimensional

25:28picture.

25:31I've got another one here.

25:33Let's take this one out.

25:38Let me show you

25:38another one.

25:43This one

25:44has been very

25:48skullfully done.

25:57Have a look.

26:03It's a skull.

26:04I wonder if it's

26:05John Rennie

26:05picture on a flat

26:07plate

26:07in three

26:08dimensions.

26:11It's called

26:12a hologram.

26:14And this science

26:15is called

26:16holography.

26:17And it's

26:18very new.

26:20But who knows

26:21one day

26:21we might have

26:22three-dimensional

26:23television.

26:25Can you imagine

26:25what that will mean?

26:26After you watch

26:27Basil Brush

26:27you'll have to sweep

26:28up all the fox hairs

26:29off the sofa.

26:30Well,

26:32anybody fancy

26:32another game

26:33of bingo?

26:34Yes!

26:35Yes!

26:36I see.

26:37You don't mind

26:38do you?

26:39We started

26:39with numbers

26:40so let's

26:41finish with

26:41some numbers.

26:43Could you

26:44hold the pad

26:44please?

26:46And there's

26:46a pen.

26:48And

26:48you take

26:50a handful

26:50of bingo

26:51numbers.

26:52Fairly big

26:53handful.

26:54Oh,

26:54I'm sure

26:54you've got

26:55enough there.

26:56Now I can't

26:56tell possibly

26:57how many

26:58numbers you've

26:58got.

26:59So can I

26:59ask you

27:00to put

27:01some back?

27:02Yes.

27:03There you are.

27:05I've no idea

27:06how many you've

27:06got.

27:06So could you

27:07count them

27:07up please?

27:10Just count

27:10them up.

27:11And could you

27:11write the number

27:12on the pad

27:12so the people

27:13at home can

27:14see how many

27:15you've got?

27:18Is it a

27:18two-figure

27:19number?

27:20Yes.

27:21Right.

27:22Add the

27:23digits.

27:23For instance

27:24if it was

27:2434 you would

27:25add 3 and

27:264 and get

27:267.

27:28Have you

27:29done that?

27:29Yes.

27:30And that

27:30new number

27:31put that

27:32number of

27:32counters

27:32back in

27:33the back.

27:37Done it.

27:38All right.

27:39Now

27:39the ones you've

27:40got left

27:40put some

27:41in one

27:41hand

27:41and some

27:42in the

27:42other

27:42hand

27:43and close

27:44both

27:44hands

27:44tight

27:45and turn

27:47the pad

27:47over so

27:48that I

27:48can't

27:48see it.

27:50I hope

27:51this works.

27:52Yes.

27:52Have you

27:53done that?

27:53No.

27:54Which hand

27:55would you like

27:55me to guess?

27:55This one.

27:56How many

27:57are in

27:57that hand?

27:57Three.

27:58So in

27:59that hand

27:59there must

27:59be

28:00six.

28:01Yes.

28:02That's right.

28:03Round of

28:03applause.

28:05Thank you very

28:05much.

28:13If you'd like

28:14to know

28:15how that

28:16trick is

28:17done

28:17drop me

28:18a line.

28:18Johnny Ball

28:18think of a

28:19number

28:19BBC

28:19London

28:20and we'll

28:21try and

28:21explain.

28:22But please

28:23put a

28:23six and a

28:24half

28:24any

28:24stamp

28:24and an

28:25envelope

28:25inside.

28:26Because you

28:26see if I

28:26had to

28:27buy

28:27one six

28:28and a

28:28half

28:28any

28:28stamp

28:28today

28:29two six

28:29and a

28:29half

28:30any

28:30stamps

28:30tomorrow

28:30and four

28:31six and

28:31a half

28:31any

28:31stamps

28:32the next

28:32day

28:32and eight

28:32six and

28:33a half

28:33any

28:33stamps

28:33oh my

28:35wages

28:35would have

28:35gone.

28:36Alright.

28:37We started

28:37with numbers

28:38and we

28:39finished

28:39with numbers

28:40and the

28:40amazing

28:41thing is

28:41with numbers

28:42you can

28:43prove

28:43just about

28:44anything.

28:45For

28:45instance

28:45this

28:46program

28:47was

28:47recorded

28:48in

28:48Manchester

28:49wasn't

28:49it?

28:50Yes.

28:50We're not

28:51in Birmingham

28:51are we?

28:52No.

28:53We're not

28:53in Bristol

28:54are we?

28:54No.

28:55We're not

28:56in Glasgow

28:56are we?

28:57No.

28:58So if we're

28:58not in

28:58Birmingham

28:59not in

28:59Bristol

28:59not in

29:00Glasgow

29:00we must

29:00be

29:01somewhere

29:01else

29:01wasn't

29:01we?

29:02Yes.

29:03And if

29:03we're

29:03somewhere

29:03else

29:04we can't

29:05be

29:05here.

29:06Goodbye.

Think of a Number (1978) S01E01 - Pilot - Johnny Ball

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Think of a Number 1978 Complete - Johnny Ball Show

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