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3357 clicks; posted to Main » on 31 Mar 2013 at 3:22 AM (4 years ago)   |   Favorite    |   share:    more»

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My oldest son was born on my birthday.

That child, IS OF THE DEVIL!
Run, most swiftly. Flee while you can!

ReapTheChaos: My oldest son was born on my birthday.

You know he did that just to steal your thunder, right?

365 potential birthdays for the grandmother
* 365 potential birthdays for the mother
* 365 potential birthdays for the child
== 48,627,125 total combinations of birthdays (365 of them where all three match ... ie one for each day of the year)
== this is a 365 in 48,627,125 chance
== which reduces to a 1 in 133,225 chance.

// someone correct me if I'm wrong because it's been decades since I've had to do this kind of math.

lordargent: 365 potential birthdays for the grandmother
* 365 potential birthdays for the mother
* 365 potential birthdays for the child
== 48,627,125 total combinations of birthdays (365 of them where all three match ... ie one for each day of the year)
== this is a 365 in 48,627,125 chance
== which reduces to a 1 in 133,225 chance.

// someone correct me if I'm wrong because it's been decades since I've had to do this kind of math.

or just 1 in 3652

meh,

call me when all 3 are on Leap Day

MurphyMurphy: meh,

call me when all 3 are on Leap Day

What's the odds on that, btw?

My nephew is born on the same day as his Mum (my sister-in-law), who in turn is born on the same day as my Mum. What does he win?

Yeah, statistically, one child is born approximately every ten days in the US (or a girl every 20 days) who has the same birthday as their mother and grandmother (father and grandfather; father and grandmother; etc.).

So, "experts" are required to calculate the odds of this?

Oh yeah because birth dates are completely random and the parents have no control over that at all...
Odds for someone trying to achieve this, maybe 1:100?

Perhaps the first generation was random but how to we know the second generation parents didn't try to do this in which case the odds are very very much lower

lordargent: 365 potential birthdays for the grandmother
* 365 potential birthdays for the mother
* 365 potential birthdays for the child
== 48,627,125 total combinations of birthdays (365 of them where all three match ... ie one for each day of the year)
== this is a 365 in 48,627,125 chance
== which reduces to a 1 in 133,225 chance.

// someone correct me if I'm wrong because it's been decades since I've had to do this kind of math.

It doesn't matter when the grandmother's birthday was, as TFA states. And while you got the same number it did, the math is off. As alluded to in Murphy's post, there are 366 potential birthdays.

...which is irrelevant, because the odds are really nowhere near that. Those are the odds for twice picking a random date that matches grandma's birthday. For most dates of conception, there's zero chance of having the baby on March 24th. If they normally use contraception and mom's gift on Father's Day is sex without a condom, it's entirely possible.

Ho-hum is right, subby.

Not same day.

Hoopy Frood: It doesn't matter when the grandmother's birthday was, as TFA states. And while you got the same number it did, the math is off. As alluded to in Murphy's post, there are 366 potential birthdays.

What I calculated was the all of the potential combinations of three dates. And then, of all those potential combinations, how many are there where all three dates are the same.

I ignored leap year because they only occur one every four years and would complicate the math too much (I'm lazy).

So I think the math is correct, but I just approached the problem from a different direction. I'm a programmer, so I tend to think in terms of matrices and for loops (and this is basically three for loops :P)

My mother, six of her aunts, and my cousin all share March 24th as their birthday. Just saying.

Hoopy Frood: lordargent: 365 potential birthdays for the grandmother
* 365 potential birthdays for the mother
* 365 potential birthdays for the child
== 48,627,125 total combinations of birthdays (365 of them where all three match ... ie one for each day of the year)
== this is a 365 in 48,627,125 chance
== which reduces to a 1 in 133,225 chance.

// someone correct me if I'm wrong because it's been decades since I've had to do this kind of math.

It doesn't matter when the grandmother's birthday was, as TFA states. And while you got the same number it did, the math is off. As alluded to in Murphy's post, there are 366 potential birthdays.

...which is irrelevant, because the odds are really nowhere near that. Those are the odds for twice picking a random date that matches grandma's birthday. For most dates of conception, there's zero chance of having the baby on March 24th. If they normally use contraception and mom's gift on Father's Day is sex without a condom, it's entirely possible.

Not to mention "designer births" where the date is scheduled and assisted with drugs and surgical procedures.

My ex and our daughter share the same birthdate. It was a real PIA, as it was nearly impossible to give them each the special day they deserved. I think I only managed to pull it off once when I gave them each plastic tiaras and pink feather boas.

Clearly that family does all their farking on June 24th

lordargent: Hoopy Frood: It doesn't matter when the grandmother's birthday was, as TFA states. And while you got the same number it did, the math is off. As alluded to in Murphy's post, there are 366 potential birthdays.

What I calculated was the all of the potential combinations of three dates. And then, of all those potential combinations, how many are there where all three dates are the same.

I ignored leap year because they only occur one every four years and would complicate the math too much (I'm lazy).

So I think the math is correct, but I just approached the problem from a different direction. I'm a programmer, so I tend to think in terms of matrices and for loops (and this is basically three for loops :P)

No, Hoppy Frood is correct.  The first date doesn't matter.  Let's take it to only mother and child.  The odds of the baby having the same birthdate as mum is simply 1/365.  The mother's birthdate is irrelevant, the child just has to match whatever that is.  So 365^2 is correct for a grandchild, not 365^3.

lordargent: Hoopy Frood: It doesn't matter when the grandmother's birthday was, as TFA states. And while you got the same number it did, the math is off. As alluded to in Murphy's post, there are 366 potential birthdays.

What I calculated was the all of the potential combinations of three dates. And then, of all those potential combinations, how many are there where all three dates are the same.

I ignored leap year because they only occur one every four years and would complicate the math too much (I'm lazy).

So I think the math is correct, but I just approached the problem from a different direction. I'm a programmer, so I tend to think in terms of matrices and for loops (and this is basically three for loops :P)

Further, for three loops would be assigning a date beforehand.  Before the grandmother's own birth.  Say January One.  Your math is correct for all three having that birthdate of January One.  But that's not this example.

I turned 62 on March 24,
Elvis was inducted into the army March 24 1965,
Exxon Valdez Crashed into some rocks on March 24, 1989!

just_another_asshole/jaa: I turned 62 on March 24,
Elvis was inducted into the army March 24 1965,
Exxon Valdez Crashed into some rocks on March 24, 1989!

It goes deeper!

Summer lovin'

My oldest brother and his son were born on our grandfather's birthday. To make shiat more real, my older brother was born on the day he died, albeit a decade plus later. My son's birthday and my birthday are the reverse of each other. And my youngest daughter missed the grandfather's by two days. And while we were a streak of all boy generations, we've each had three kids that went boy, girl, girl.

You know what I call that? Nothing. I'm not crazy.

In the interest of over sharing, that birthday is nine months after valentine's day.

Unless my calculations are off, this must happen around twice a day on average somewhere in the world, and about 6-7 times a year in the UK, so not massively exciting.

... at least I now know that my ability to multiply numbers together means I get to call myself an 'expert'.

Ed Willy: just_another_asshole/jaa: I turned 62 on March 24,
Elvis was inducted into the army March 24 1965,
Exxon Valdez Crashed into some rocks on March 24, 1989!

It goes deeper!

Yeah, well I get a whole disambiguation page for my birthday:  http://en.wikipedia.org/wiki/Fourth_of_July_(disambiguation)

Apparently there's something in my family's genetics that calls for sexytime on Thanksgiving because my daughter, myself and my grandmother have the same birthday and my mom is only off by three days.

Even though nobody's supposed to get laid on Thankgiving because all the coats are on the bed.

I share a birthday with my late paternal grandfather, December 25, but that day is not my father's birthday.

/It is Sir Isaac H. Newton's birthday, however.
//Also Karl Rove's.
///I cannot think of anyone else of importance with that birthday at the moment, but I am sure that there are some.

Gulper Eel: Apparently there's something in my family's genetics that calls for sexytime on Thanksgiving because my daughter, myself and my grandmother have the same birthday and my mom is only off by three days.

Even though nobody's supposed to get laid on Thankgiving because all the coats are on the bed.

Dry cleaners are open on Monday, it's no big deal.

My father and I shared the same birthday... was always fun, until he passed away.  Now I could give two shiats less about looking forward to my birthday anymore.  Just not the same / depressing.

And Ripley yawned.

lordargent: 365 potential birthdays for the grandmother
* 365 potential birthdays for the mother
* 365 potential birthdays for the child
== 48,627,125 total combinations of birthdays (365 of them where all three match ... ie one for each day of the year)
== this is a 365 in 48,627,125 chance
== which reduces to a 1 in 133,225 chance.

// someone correct me if I'm wrong because it's been decades since I've had to do this kind of math.

The chance is one in two: either it will happen or it won't.

Mangoose: My oldest brother and his son were born on our grandfather's birthday. To make shiat more real, my older brother was born on the day he died, albeit a decade plus later. My son's birthday and my birthday are the reverse of each other. And my youngest daughter missed the grandfather's by two days. And while we were a streak of all boy generations, we've each had three kids that went boy, girl, girl.

You know what I call that? Nothing. I'm not crazy.

In the interest of over sharing, that birthday is nine months after valentine's day.

That's nothing. I have 3 sixes in my birth date and 3 sixes in my Social Security number. None birthmarked on my head.

I have an uncle that had three kids by two different wives (not all at the same time mind you), and they were all born on his birthday.  So yeah, sometimes odd things happen.

DrPainMD: Mangoose: My oldest brother and his son were born on our grandfather's birthday. To make shiat more real, my older brother was born on the day he died, albeit a decade plus later. My son's birthday and my birthday are the reverse of each other. And my youngest daughter missed the grandfather's by two days. And while we were a streak of all boy generations, we've each had three kids that went boy, girl, girl.

You know what I call that? Nothing. I'm not crazy.

In the interest of over sharing, that birthday is nine months after valentine's day.

That's nothing. I have 3 sixes in my birth date and 3 sixes in my Social Security number. None birthmarked on my head.

Puh-shaw.

You and a good chunk of people born in sixty six can claim that one, I'm sure.

pjc51: Ed Willy: just_another_asshole/jaa: I turned 62 on March 24,
Elvis was inducted into the army March 24 1965,
Exxon Valdez Crashed into some rocks on March 24, 1989!

It goes deeper!

Yeah, well I get a whole disambiguation page for my birthday:  http://en.wikipedia.org/wiki/Fourth_of_July_(disambiguation)

http://en.wikipedia.org/wiki/July_4

Try this!

Ed Willy: just_another_asshole/jaa: I turned 62 on March 24,
Elvis was inducted into the army March 24 1965,
Exxon Valdez Crashed into some rocks on March 24, 1989!

It goes deeper!

Thanks, never thought to check Wikipedia for that!

So the men in that family only get sex once a year.

Mangoose: DrPainMD: Mangoose: My oldest brother and his son were born on our grandfather's birthday. To make shiat more real, my older brother was born on the day he died, albeit a decade plus later. My son's birthday and my birthday are the reverse of each other. And my youngest daughter missed the grandfather's by two days. And while we were a streak of all boy generations, we've each had three kids that went boy, girl, girl.

You know what I call that? Nothing. I'm not crazy.

In the interest of over sharing, that birthday is nine months after valentine's day.

That's nothing. I have 3 sixes in my birth date and 3 sixes in my Social Security number. None birthmarked on my head.

Puh-shaw.

You and a good chunk of people born in sixty six can claim that one, I'm sure.

Nope... not born in '66.

I was born on my father's birthday. He was born on his mother's birthday. My mother's sister was also born on that day. My step-brother's wife as well. It's almost as if we were trying, but in reality we're probably the result of an amorous Valentine's day.

I have a slightly similar semi CSB. My dad was born in 1936 when large broods were common. My grandparent's first child was allowed to name my father, so he did. Years later when my parents met and got married they decided if and when they had a son he would be named (my father's name), Jr. Almost 3 years later I was born on the birthday of my uncle who chose my dad's name.

I don't know if that made sense as I'm terribly hungover and my daughter has woken us up with excitement over her Easter basket.

DrPainMD: Nope... not born in '66.

I think he was actually implying "You... as well as people born in 66'..."

HOLY SHIAT WHAT ARE THE ODDS, WHAT WITH THE THOUSANDS AND THOUSANDS OF DAYS IN THE YEAR?

That family really likes Christmas.

MMASnafu: That family really likes Christmas.

Swing and a miss.

Farkers, we need to make sure that when she comes of age, somebody porks the hell out of her in June.

I was born on March 24th and I don't think I've ever even met someone that shares my birthday.

Ed Willy: Clearly that family does all their farking on June 24th

Well my birthday is June 11th, and my daughter was born March 10th.  I can see that happening.

As for family getting their groove on on the same day I refer to when twin sisters and their husbands share an apartment when both girls get pregnant at the same time.  I used to work with one of the twins, now I work with her bil, and I tease him anytime the topic presents itself.

/when that many women share a birthday, the men better not ever forget.

Having multiple childrens increases the odds.

ReapTheChaos: My oldest son was born on my birthday.

On my father's side he was born on his father's birthday and I was born on his mother's. My mother was quite pleased with that.

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