Ok, I am going to teach you something I learnt today. I am going to teach you to force people into losing by using maths. If you wish to do this you will need...
a friend
a coin
a piece of paper
a pen
a brain
OK, get your coin and put it inbetween you and your friend. ok, ask your friend you are going to toss a coin and ask him to pick a sequence. for example he could say: HHH, HTT, THH, HTH (with H representing Heads and T representing Tails) Write it on the left hand side of your paper.
It is important that [b]you[/b] ask [b]him[/b] first. Now using some maths we can rigg it so you will win. Take his sequence and get the middle letter, replace this with the opposite and make this the first in your sequence. For Example
Firends Sequence: H [b]H[/b] H
Your Sequence: [b]T[/b] H H
Now, take it in turns to toss the coin and write the results down, it is garunteed that your sequence will show up more often than his. Now, whenever your sequence shows up you get a point, the same for your friend. First person to 5 points wins!
THE MATHS BEHIND IT
Dunno, saw it on TV
Someone watched derren brown last night
How is it guaranteed that my sequence will show up more often than his? Every sequence has the same chance of appearing. ½ × ½ × ½ = 0.125 = 12.5% chance for every of the 8 sequences possible.
Or is this MAGIC?
[QUOTE=Channel4.com/derrenbrown]It seems impossible to predict whether a coin will come up heads or tails in a fair game of coin flipping. But in 1969 mathematician Walter Penney devised a seemingly impossible coin tossing bet in which the odds were skewed in your favour.
It works like this. You ask someone to give you a sequence of three heads (H) or tails (T). For instance they might choose HHH or TTT. More likely it will be a combination of heads and tails as in HHT. You also choose a sequence of heads and tails. For example, THH.
The bet is that your sequence will show up first if a coin is tossed over and over again, the upper side being noted each time.
It seems a fair bet. In a fair game it is impossible to predict which side of a coin will land uppermost. This might lead you to believe that one sequence is as good as another. But this isn’t true. The reality is that your chosen sequence is more likely to show up earlier than your opponent’s sequence. That’s because you use a secret formula to decide which sequence you will bet on.
Mathematicians call this a non-transitive game. In effect it means that no matter which sequence your opponent picks you can always pick a better one. It is like the game of rock, scissors, paper. If you knew what your opponent chose, you could always beat them.
There is an easy to remember formula for deciding which sequence you choose.
You ask the other person to make their choice first. This isn’t courtesy, it’s vital. From what he says, you work out what you’ll say. You do this by taking the middle one of his three, reversing it and putting it at the start. So if he says HHH, you say THH, and ignore the last one.
If the opponent chooses TTT, you choose HTT. If the opponent chooses HTT, you choose HHT. If they choose HTH, you choose HHH.
There are only eight possible sequences, so if you can’t be bothered to work them out, write them down on a hidden cue card. On average your sequence will win two thirds of the time. Those are great odds if you play this game severa[/QUOTE]
[url]http://derrenbrown.channel4.com/derren-brown-penney-ante-game.shtml[/url]
This is the article on the website relating to the series.
I've always noticed that if you flip the same side three times out of four (not consecutively), the fourth time it will be the opposite side.
Like if you do Heads first, then heads would appear at least two more times within the next 3 flips, and one of those flips will be tails.
It's just something I've always observed in coin tossing, I've made bets and won.
It's all probability and chance.
[QUOTE=MR-X;17265112]It's all probability and chance.[/QUOTE]
this.
[QUOTE=ss1234;17265043]I've always noticed that if you flip the same side three times out of four (not consecutively), the fourth time it will be the opposite side.
Like if you do Heads first, then heads would appear at least two more times within the next 3 flips, and one of those flips will be tails.
It's just something I've always observed in coin tossing, I've made bets and won.[/QUOTE]
That's scary.
I just did that it was HTHH.
I've also found that most of the time, if you flip the coin high enough into the air, it will land opposite what was facing up when you flipped it, IE if you have it sitting heads up on your thumb, then you flip it, chances are it'll land face-down.
Doesn't always work, but it seems to happy pretty often.
Well, when you flip a coin it isn't 50/50
The side that is facing up is 51/49
for example, if heads is facing up
heads has a 51% chance of winning.
I lost The Game!
Damn it!
If we tried hard enough and got the average height of the toss, the speed and ammount of rotations we could work out a method for deciding weather heads or tails will win.
[QUOTE=Loli;17265383]Well, when you flip a coin it isn't 50/50
The side that is facing up is 51/49
for example, if heads is facing up
heads has a 51% chance of winning.[/QUOTE]
How does one side get a 1% extra chance of winning?
this doesn't actually work because probability is not literal
[QUOTE=Disarray;17265413]How does one side get a 1% extra chance of winning?[/QUOTE]
It's to do with the rotation ammount. I saw it on QI.
[QUOTE=wipeout4wh;17265393]I lost The Game![/QUOTE]
Is this a joke? Seriously, are you kidding me?
I hate you.
[QUOTE=wipeout4wh;17265393]I lost The Game![/QUOTE]
me too.
I can't believe I'm the only one who lost... just look at the thread title.
[QUOTE=Loli;17265427]It's to do with the rotation ammount. I saw it on QI.[/QUOTE]
I'm pretty sure that isn't true because you can have any amount of spins and the way you flick it may not be consistent all of the time.
[QUOTE=Loli;17265383]Well, when you flip a coin it isn't 50/50
The side that is facing up is 51/49
for example, if heads is facing up
heads has a 51% chance of winning.[/QUOTE]
prove it.
[editline]05:23PM[/editline]
[QUOTE=Loli;17264872]Ok, I am going to teach you something I learnt today. I am going to teach you to force people into losing by using maths. If you wish to do this you will need...
a friend
a coin
a piece of paper
a pen
[b]a brain[/b]
Dunno, saw it on TV[/QUOTE]
damn.
Amazing, my fucking mind blew from your ingenious idea. I am going to show [b]all[/b] my friends this wonderful trick!!!!
Oh OK!
OP could atleast admit he watched Derren Brown
well he said he saw it on tv
Yes, I did watch Derren Brown, he is mighty clever.
I can flip a coin to land on the side I pick.
You know that maths can only tell you something statisticaly.
Most likely if you try it 1000 times you will get a farely similar amount of times that each sequence happens, BUT Maths is not physics, in real life it all depends on tiny differences in the way you throw the coin if it will be H or T, it is possible that out of a 1000 times only one sequence ever appears ( although unlikely ).
Know your chaos theory.
Everyone is wrong except the person who got 5x dumb ratings, Loli. FP is full of idiots.
[url]http://www.codingthewheel.com/archives/the-coin-flip-a-fundamentally-unfair-proposition[/url]
Also: addressing the OP, the OP is actually right because in order for the other person to score a point, you will have had to get a point right before they did. Example: THTHTHTHHH
There is no way for HHH to show up without the first two H's being in front of a T so in order for there to be an HHH, there must be a THH
[QUOTE=cakeonastick;17266720]Everyone is wrong except the person who got 5x dumb ratings, Loli. FP is full of idiots.
[url]http://www.codingthewheel.com/archives/the-coin-flip-a-fundamentally-unfair-proposition[/url]
Also: addressing the OP, the OP is actually right because in order for the other person to score a point, you will have had to get a point right before they did. Example: THTHTHTHHH
There is no way for HHH to show up without the first two H's being in front of a T so in order for there to be an HHH, there must be a THH[/QUOTE]
Unless the coin never lands on T.
What savages say 'maths'
The ones in the UK?
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