Our system detected that your browser is blocking advertisements on our site. Please help support FoxesTalk by disabling any kind of ad blocker while browsing this site. Thank you.
Jump to content
 Share
Kopfkino

Things you can't get your head around...

By Kopfkino, in General Chat

Recommended Posts

Benguin

Benguin

Posted
Posted
6 minutes ago, Buce said:

 

The Birthday Problem which shows that in a room of just 23 people, there is a 50% probability that two will share the same birthday; 99.9% probability is reached at 70 people.

 

It is so counterintuitive as to be mind blowing.

Intuition leads you to think of yourself in that room asking the other 22 people when their birthday is. If that’s all that happened, then it’s not only logical but factual that there’s about a 1 in 13 chance they’ll match. 
 

The actuality though is that once you’ve asked everyone, someone else will ask everyone and so on and by the time everyone’s asked each other the possibilities of a match are exponentially higher.

 

I do love things like this and you’re absolutely right about counterintuitive. The first time I heard it, I got so angry and though the other person was a moron! 

  • Like 1
Link to comment
Share on other sites
TiffToff88

TiffToff88

Posted
Posted
10 minutes ago, Buce said:

 

The Birthday Problem which shows that in a room of just 23 people, there is a 50% probability that two will share the same birthday; 99.9% probability is reached at 70 people.

 

It is so counterintuitive as to be mind blowing.

So in theory, one of the next 22 people to see my post will share the same birthday as me? (18th of March)

Link to comment
Share on other sites
Benguin

Benguin

Posted
Posted
2 minutes ago, TiffToff88 said:

So in theory, one of the next 22 people to see my post will share the same birthday as me? (18th of March)

No but one of the next 22 people will have a 50% chance of sharing a birthday with you or one of the other 22 people that view your post

  • Like 2
Link to comment
Share on other sites
Jattdogg

Jattdogg

Posted
Posted
50 minutes ago, TiffToff88 said:

A little side note to this, my best friend growing up was actually born in the same hospital ward as me on the same night (me just before midnight, him just after, so different birthdays). What are the odds of that!?

When i was growing up, my nextdoor neighbour and good friend had the exact same birthday as me including year. Just the hours were different.

Link to comment
Share on other sites
Royston.

Royston.

Posted
Posted
2 hours ago, TiffToff88 said:

A little side note to this, my best friend growing up was actually born in the same hospital ward as me on the same night (me just before midnight, him just after, so different birthdays). What are the odds of that!?

Is your best friend your twin brother?

  • Haha 2
Link to comment
Share on other sites
  • 2 weeks later...
Alf Bentley

Alf Bentley

Posted
Posted
On 10/11/2020 at 14:48, Stadt said:

It’s obvious isn’t it? The only other pulling that springs to mind is pulling your plonker or pulling pints and they’re both straight forward enough lol 

 

Straightforward in isolation, but attempting the two in tandem would be tough to coordinate - and you'd probably lose your job as a barman.

  • Haha 1
Link to comment
Share on other sites
Alf Bentley

Alf Bentley

Posted
Posted
On 15/11/2020 at 11:09, Buce said:

 

The Birthday Problem which shows that in a room of just 23 people, there is a 50% probability that two will share the same birthday; 99.9% probability is reached at 70 people.

 

It is so counterintuitive as to be mind blowing.

 

Just sort of got my brain to accept this concept by starting at the other end.....

 

When the last person of 23 enters the room, assuming the others all have different birthdays, there's about a 6% chance that someone will have the same birthday as that last individual (22/365.25)

When the previous  person entered the room, there was just under a 6% chance (21/365.25).....the chance getting a bit smaller as you work your way backwards.

 

Similarly, with 70 people, the odds for the last person are about 19% + nearly 19% for the second last etc.

 

And those individual chances are all additional. Does that make sense? Well, it made sense to me! :D

Link to comment
Share on other sites
fuchsntf

fuchsntf

Posted
Posted (edited)
28 minutes ago, Buce said:

 

@fuchsntf's posts.

 

It's like this legend of a man picked up a smattering of words everywhere he went on his travels, then haphazardly bolted them on to some curious New Parks- German hybrid.

 

The result is astonishing, almost Tolkeinesque... :worship:

Just Bloody jealous....!!!    

And I always Presumed I was Posting on Foxestolk.... a football Loving middle-earth platform...:ill:

 

Seems I have taken up Bad hobbits...:whistle:

Edited by fuchsntf
  • Haha 2
Link to comment
Share on other sites
Jattdogg

Jattdogg

Posted
Posted
12 hours ago, Buce said:

 

@fuchsntf's posts.

 

It's like this legend of a man picked up a smattering of words everywhere he went on his travels, then haphazardly bolted them on to some curious New Parks- German hybrid.

 

The result is astonishing, almost Tolkeinesque... :worship:

 

One poster i'd like to meet with in person. I bet the conversations would be epic lol

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...