Hey there! Sign in to join this conversationNew here? Join for free
    Offline

    0
    ReputationRep:
    October 20th anyone?

    Seen 19th and 21st but not 20th.
    Offline

    0
    ReputationRep:
    (Original post by SophieGloria)
    29th March.
    I found my twin !

    Posted from TSR Mobile
    Offline

    11
    ReputationRep:
    (Original post by Krish4791)
    1st September.
    My sister birthday.
    Offline

    3
    ReputationRep:
    4th April?
    Offline

    11
    ReputationRep:
    18th October
    Offline

    0
    ReputationRep:
    5th May

    (Original post by ramkanwar55)
    may 5th guise
    :happy2:
    Offline

    15
    ReputationRep:
    (Original post by NiceToMeetYou)
    Hey there =]

    Don't know if you've heard of the birthday paradox, but it basically states that once you reach 57 people in a room there is a 99% chance that they share the same birthday.

    So to try this out, just post your birthday and we'll see how many people it takes before a birthday is shared

    To start off - June 18th
    I've done a quick example of how the chance of two people having the same birthday increases faster than the number of people in the group. Each line represents the chance of the two people having the same birthday (1/365). So totalling the number of lines gives you the chance two people will have the same birthday out of the whole group. It soon gets too difficult to do by hand though. I'd have to dig out my old statistics book to find a formula.

    Name:  image.jpg
Views: 165
Size:  501.0 KB

    I hope the image and my handwriting are ok!
    Offline

    0
    ReputationRep:
    March 25th
    Offline

    15
    ReputationRep:
    This applies if every DOB is same likelihood of happening. Go through when most people from school/who you know have their birthdays, take off 9 months or so, you'll see when a lot of people were conceived. It isn't random.
    Offline

    19
    ReputationRep:
    (Original post by jqian)
    Nice, my dad's birthday is on the 24th June. My proper exams start on my birthday and finish on my dad's birthday.
    My final exams on my birthday :P Yours seem later than most?
    Offline

    0
    ReputationRep:
    (Original post by speedyqueen)
    30th November
    (Original post by pjm600)
    30th november
    Birthday buddies
    Offline

    10
    ReputationRep:
    (Original post by magicmuggle)
    Me too! 3rd March ftw
    Ooooh yea high five!
    Offline

    18
    ReputationRep:
    8th November
    Offline

    0
    ReputationRep:
    june 10th
    Offline

    15
    ReputationRep:
    28th April
    Offline

    12
    ReputationRep:
    (Original post by TLK)
    August 24th!
    BINGO!
    Offline

    15
    ReputationRep:
    (Original post by IcEmAn911)
    28th April
    You share a birthday with my grandmother; does that count...?
    Offline

    15
    ReputationRep:
    29 oct
    Offline

    13
    ReputationRep:
    (Original post by SwitchingOne)
    8th december
    8th December :nothing:

    Spoiler:
    Show
    Hi twin!!11!211!!
    Offline

    1
    ReputationRep:
    223 posts. No one shares my birthday. Let's see how long this goes.
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    What's your favourite Christmas sweets?
    Useful resources
    AtCTs

    Ask the Community Team

    Got a question about the site content or our moderation? Ask here.

    Welcome Lounge

    Welcome Lounge

    We're a friendly bunch. Post here if you're new to TSR.

    Groups associated with this forum:

    View associated groups
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.