The Birthday Problem?
475811
Here's a step by step explanation of how the probability is assessed.  Hope this will make things clearer for you.\n\nhttp://www.mste.uiuc.edu/java/java/birthday/explanation2.html
134575
Happy Birthday.\nMine's in two days
227761
Just think about your Birthday party. f(x)= u and the value is ur guests.
377422
No. it's fome mad weird sequencing, but if your first term is 34, and your 23rd term is 9 times your 21st, there is no concievable way that 24th could be one, as for w = 9u, both w and u would have to be <1, which implies that x must also be <1. Or maybe this was a joke. Or maybe it just imvolves a really twisted function.
500368
The links below have good info. The first briefly addresses your first question, and the second is a good brief history of the problem which provides some insight as to the difficulties encountered. I actually played around with this problem a little on an elementary level and it is interesting. Cheers.\n\nhttp://www.sciam.com/print_version.cfm?articleID=000DBA55-B698-1C71-9EB7809EC588F2D7\n\nhttp://www.geocities.com/fermatnow/flt/
585713
Happy Birthday!! Go out, have a good time, get something to eat, or go to a movie. Do something exciting!!
464858
Happy Birthday!Thanks for the 2 points!\nOH!OH!OH!Open the present i got you!It's..(to be continued..if i get 10 more points)
1078061
This is the question described in shorthand by computer scientists as does P = NP? The answer is the problem has never been solved, so you can't be certain.  But most likely it isn't possible.
615893
When you set up your account, and it asks you when your birthday is, it's supposed to ask you if you want to have it on your profile and for it to show up for people.\n\nMaybe you should get on account settings and look for birthdate and change the setting so other people can see when your birthday is!
994954
Theres an extra day on the last week. Think how your birthday moves forward a day each year. Ther are actually 365 1/4 days in a year. The leap year every 4 years means this doesnt ever go out of synch too far
260438
www.birthdayalarm.com
635979
Friends, that's the best birthday present I've ever received. Every year, they would throw me a surprise party. It's not really a "surprise" anymore, since they do it every year. But I always love it, their the best! Oh, and Happy birthday. Hope it's a good one!
1002249
my mother was born feb 29. we celebrate it when she wants and where she wants. but every 4 years we have a big blowout party. she loves it cause she has had only 17 b-days. she really likes when people ask her age.
1016704
a number which does not exist
1156258
many many happy returns of the day.enjoy a lot.u get this chance only once in a year.i wish that all the tomorrows that r going 2 enter your life may be as enjoyable as your birth day.once again HAPPY BIRTHDAY.
751055
do you know anyone else who knows his birthday? if not, ASK him!!!   \n\n(I know, a lot easier said than done, but seriously, we have no idea who you're talking about, so go ask the guy!)
964703
I would start by asking the kids questions.\n\nHow many days are in a year?\n\nSo, if we have 80,000 people how could we estimate how many people will be at each party? At least 1 kid will be smart enough to tell you to divide it. Be sure that write it on the board as you go.\n\nWhen you come up with 219 then ask the kids if they really think that the birthdays will be divided equally. If that is true, then if there are 24 kids in your class... there should be 2 birthdays in each month. (Maybe as a starter for the lesson you could have some sort of birthday poster and could quickly write the names of the kids under each month that their birthday falls. You may have some months with 5 birthdays, and others with 1 or none). If they say that they think that the birthdays will be evenly then use your birthday chart and explain that their birthdays are random; that it does not work out to exactly 2 birthdays in each month.\n\nThen you can explain to them that with 80,000 people there are likely to be a few birthdays on more days than others. They will get it; especially when you use their own data to help explain it.\n\nIf time allows you could do another problem that is similar, but maybe using something like the day they got their first pet (I don't know; something...) anyway, because some people may have never had a pet you could ask if it is possible that some people never come to celebrate. Or maybe use vet patients for the problem because then we could assume that all patients would qualify.