#1**0 **

This calculator has a limit of 199! Anything above that, it will say "infinity".

However, yours can be reduced to this:

365! / (335! * 365^30) =365 - 335 =30.

[365P30] / 365^30=0.29368375728073........etc.

Guest Jun 27, 2017

#2**0 **

Well, Mr. Blarney Bag, like usual, you are wrong. This calculator can display __a fully resolved mantissa__ of at least 2048 digits. You just have to know how to use it. I could explain it but you need to be smarter than the machine to understand it. So, that leaves you out.

This equation is a solution to the probability of two persons NOT sharing the same birthday (date) in a group of thirty persons.

Alan elaborates on the equation (not the probability), here.

And he presents a much more clear method of entering it into the calculator, here.

****

Correction on comment

This equation is a solution to the probability of two persons NOT sharing the same birthday (date) in a group of thirty persons.

The original read:

*This equation is a solution to the probability of two persons sharing the same birthday (date) in a group of thirty persons.*

1-(npr(365,(365-335))/365^30) is the solution to the probability of two persons sharing the same birthday (date) in a group of thirty persons.

GingerAle
Jun 27, 2017

#3**0 **

Ok, Ms. Big Mouth! Why don't you show us how?? calculate 365!, step by step. Just maybe will learn something from you for a change, instead of just shooting off your goddamned Big Mouth! Go ahead.

Guest Jun 27, 2017

edited by
Guest
Jun 27, 2017

#6**0 **

Well , Mr.BB, as I said. I could explain it, but you need to be smarter than the machine to understand it. So, that leaves you out. I generally subscribe to the philosophy of not teaching pigs to sing because it is a waste of my time and it annoys the pigs. It is easy to tell by your post that you are annoyed, so both of those points are in play, here.

Anyway, just so you know that I’m not exhaling blarney, I will share the method with someone who can understand it, and then comment on the validity of the calculator’s output.

Hummm. Let me think, whom I might choose . . . .

GingerAle
Jun 28, 2017

#7**0 **

"Let me think" ??? You can** think,** Ms Big Mouth!? Can't you see that my expression which is done in two steps, namely: 365 - 335 =30 (step one). [365P30] / 365^30=0.29368375728073 (step two), which I have turned into an " nPr" problem(365P30), as Alan had suggested without ever seeing it, is exactly the same as Alan's, namely: 1-(npr(365,(365-335))/365^30) are EXACTLY THE SAME? If you can't see that, you dumb cow, then there is no hope for you. I think you are overdue for your therapy session or haven't taken your medication, you ignorant misfit!! Your hallucination has gotten out of control, you d**k head! Better maybe, to hit the bottle instead! If you think that picking up a fight, with anybody and everybody, for no good reason in this forum, from 12-year old kids to retired people, is going to alleviate your severe anxieties, then you live in another world, a world of fantasy, in which you have been living most of your adult life! Heal thyself, scatterbrains!.

Guest Jun 28, 2017

#8**0 **

Oh dear! Have I mistaken a 12-year-old for the blarney bag? It’s easy to see how that could happen.Maybe it’s because you are well into your second childhood. It’s called regression. You really are far along if you can’t tell the difference between a cow and a chimp.

Any way Mr. BB, I know it’s difficult for you to keep more than one thought in your atrophied brain, but I never said your solution was wrong. That birthday problem and the solutions are well presented and commented on in most math forums. What I said was Alan’s presentation would work directly in the site calculator—and it does. Your presentation does not.

I am rather curious why you waited until now to defend and expound on your answer. And really, how you came to post it in the first place. You usually only post solutions to relatively simple interest rate questions. You’ve never posted a solution to a combination or permutation problem before--not even using your normally incompetent presentation methods.

My trolling comments are mainly because of this:

__This calculator has a limit of 199! Anything above that, it will say "infinity” . __

You’ve posted similar comments, before.

I disagree. I can exceed this limit. What I am unsure of is how dumb it down enough for you to understand it.

GingerAle
Jun 28, 2017

#9**0 **

If you REALLY knew what I answer and don't answer, you would be stunned! There you go again, pontificating on things you know nothing about. Why don't learn to keep your Big Mouth shut?? You are full of it! Who made you to be an arbiter on this forum? If I goof, one of the moderators will straighten me out pronto.We don't need your Big Mouth!. Got it, dumb b***h??.

Guest Jun 28, 2017

#4**0 **

By the way, Ms. Big Mouth, Alan did exactly as I did to arrive at exactly the same answer, since it is the same question!! If you are too STUPID to understand that, I can't help you!.

Guest Jun 27, 2017

#5**0 **

Problems with very big numbers, such as this question, can easily be solved using logs:

log(365!) =778.399745153...........(1)

log(335!) + log(365^30)=

702.063079291 + 76.8687859338

=778.931865225.............................(2). We just subtract (2) from (1)

778.399745153 - 778.931865225 =-0.532120072 - This is the exponent of 10:

10^-.532120072 =0.293683757........., Which is the same answer.

Guest Jun 27, 2017

edited by
Guest
Jun 28, 2017