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00:26
@Rubio For those types of "definitions", you need to be clear that you're giving a characteristic. "It clears the air" would work, but "clears the air" would not be a definition for FAN, even in a regular crossword.
@Deusovi Ah, so "it clears the air" can clue FAN, but "clears the air" would have to be something like VENTILATES?
Yep!
For nouns, you can usually clue them as "It [verbs]". I'm not a fan of it (heh), but that's just personal preference - it's perfectly valid.
@Rubio Even if it wasn't standard (which I'm not sure about), I think that'd be perfectly fine! I like that as a clue.
@Randal'Thor No it's not. The number of ways to have half and half is (2n) choose n, and you divide that by 2^(2n) to get the probability.
@Deusovi Ah, crap. I told you I was no good at probability :-)
Smaller sizes are much more likely to be equally split than larger ones.
That's ... actually obvious now that I think about it.
If there are only 2 beds, then (1,1) is a pretty likely possibility.
If there are 200, then exactly (100,100) would be quite rare.
00:37
Yep.
@AnimeshAshish @Rubio @Mithrandir ^^^
yo
n factorial? wouldn't it be 2^(2n)?

Couldn't we reformulate the problem as "what proportion of 2n-bit integers have an equal number of 1 and 0 bits?"

& for n = 2:

BBBB, BBBG, BBGB, BBGG!, BGBB, BGBG!, BGGB!, BGGG, GBBB, GBBG!, GBGB!, GBGG, GGBB!, GGBG, GGGB, GGGG

P(G = B) = 4C2 / 2^4 = 6/16

not 6/24
@Will Whoops, you're right. I was wondering why my formula was wrong.
What question is this?
I can't seem to find it under new questions, or the main page.
00:44
6 hours ago, by Animesh Ashish
There are two maternity hospitals in a town with 50 and 500 beds. Given full occupancy on a particular day, which of these hospitals is more likely to have equal no of boys and girls given probability of boys = probability of girls ? ‪
Someone came into chat and asked whether getting an even split was more likely with 50 coin flips or 500 coin flips. (The original was about genders of babies in hospitals, but that's the essence of the problem.)
so basically which is greater: (2^50)(50 choose 25) or (2^500)(500 choose 250)?
Oops that should be divided.
(2^50)/(50 choose 25) or (2^500)/(500 choose 250)?
Isn't that it? The numbers will be ugly though.
2^50 is just all possible coin flips.
(ordered)
And then 50 choose 25 is the number of coin flips which will have 25 heads.
@TheGreatEscaper Unless there's some quick and neat way to do it, like with n^m and m^n.
Oops my fractions are the wrong way around.
@Rand al'Thor I doubt it.
Because I'm fairly sure (50 choose 25)/(2^50) is the correct thing to evaluate
And if you look at 50 choose 25 that has all sorts of annoying factors in the top.
You can't really do it without involving factorials in some way.
50 choose 25 is just 50! / 25!25!
00:49
UNLESS, the statement always holds in one direction
There's probably a way to reformulate at least part of the equation with Stirling's Approximation
@TheGreatEscaper I'm pretty sure it does.
In which case you could do it inductively?
I don't wanna do the math right now, though :P
I'm not sure.
00:49
Here's a graph of the probabilities for n=1 to 9:
Hold up.
So the probability of an even number of heads and tails decreases each time?
Yeah.
Can't we just inductively prove that
Induction would probably work, but I'm really tired right now, so "just look at it" is gonna have to do.
And then the fact that we double it is irrelevant.
I'll give it a go.
00:50
The doubling is to make it possible to get 50/50.
There are 2n flips.
@TheGreatEscaper Well, it does, by the intuitive argument Deusovi and I gave.
Where did this happen? (sorry I kind of just turned up in chat randomly)
So maybe we can do it by induction, comparing n and n+1 instead of 50 and 500?
14 mins ago, by Rand al'Thor
If there are only 2 beds, then (1,1) is a pretty likely possibility.
That's what I was saying.
13 mins ago, by Rand al'Thor
If there are 200, then exactly (100,100) would be quite rare.
00:51
That's not a proof... :P
That's why he called it an "intuitive argument", not a proof.
What are we trying to prove? (was just afk)
@Volatility It's more likely to get an equal split with 2n coin flips when n is small.
Yep, it's easy when you compare n with n+1.
I think i've done the inductino.
*induction.
@Randal'Thor nice :)
00:54
After dividing by all the common factors, it reduces to comparing (2n+2)(2n+1) with 2(n+1)^2.
there's a strong probability that there are a lot of math nerds in here right now. That's about the limit of my probability skill beyond the trivial cases. :)
@Randal'Thor You can actually reduce that further to (2n+1) with (n+1)
@Volatility Exactly.
I stopped at that stage of the reduction because it's obvious how to get there AND how to proceed from there.
Actually that's not right (I was wondering why I was getting the probability to increase with n)
The probability should be (2n choose n)/2^ 2n
I made that mistake too
01:04
so it actually reduces to comparing (2n+1) with (2n+2)
Well, in any case it's easy to prove by induction.
Who cares about the details :-P
01:43
0
Q: The Ooh-Aah Cryptic Maze

TheGreatEscaperAs you come to consciousness, your first thought is not of the cold stone floor beneath you, nor of the skull-adorned torches hanging on the walls. ugh... I stayed up too late on PSE last night... My brain's a little fried. 'I see you're finally awake.' With a start, you leap to your feet and loo...

02:02
Oops, sorry, I thought the maze was the wrong way around, so I flipped it, but it was actually right in the first place, so I flipped it back. Whoops!
02:22
0
Q: From zero to parabola in 2 symbols

humnWeekend analytic geometers, get ready to race for the parabola and take your places at the starting line:       0   =   ( x −1) 2 And they’re off!   Three symbols ( +, y  and 2 ) take the lead at an early point:             0   =   ( x −1) 2 + y 2 Prospects don’t seem good for a parabola. ...

sees title, thinks question might be easy
notices OP, knows it won't be easy
02:40
has a go at solving it, realises it's actually quite easy after all
@TheGreatEscaper lol, whoops, thanks. Presumably SHEOAK is correct?
03:18
@Randal'Thor Hah, @Randal'Thor, they come in all shapes and sizes, and this was purely for fun. What a thrill to see @TheGreatEscaper and you sprint through the course!
@Volatility yes :)
@humn it was a fun question!
03:50
So, finally decided to enlist the help of my laptop to generate my grids. Several hours and 221 lines later, it takes a couple seconds to find a 6x6 grid, after generating 76 (!) impossible configurations.
?
Ahhhhhh your logic puzzle :)
I'm looking forward to it!
04:15
I haven't made anything larger than 6x4 for my logic puzzles yet.
05:15
Standard Sudoku puzzles are fine for the site, right?
@TrojanByAccident Sure!
@Deusovi Great, just wanted to make sure, because I haven't seen a normal Sudoku on here for a while :P
and by "a while" I mean ever, unless my memory is bad :P
BG's Christmas sudoku was normal
@Deusovi it was?
Yeah, and so was the New Year one from yesterday.
05:19
Ah, no, I meant "normal" as in "using only numbers"
I guess standard would have been the proper term?
Standard sudokus are fine :) they can be a lot of fun
Well, mechanically there's no difference.
But yeah, go ahead!
Alrighty :D
Finishing up my hand-made template
will post in a few
Another question, a little more site-wise this time - how appropriate would it be to share all the sudokus from a puzzle book you own, in say, 5-puzzle-per-question batches?
Would that be considered fishing for rep?
Personally I don't see much wrong with sharing non-original puzzles, BUT...
I feel like for something like sudoku, where there are many easily accessible resources online
I don't think that would be acceptable. At least, I'd certainly downvote it.
05:27
The sharing of a large amount of them doesn't hold much worth.
I don't think it's against site policy (except maybe because of copyright issues?) but it's a generally sketchy thing to do.
Would there be a certain acceptable amount?
Why would someone do that unless they're fishing rep?
@Ankoganit Some people just like sharing :)
05:29
Yeah, I don't understand why you'd want to do that. Just batches of 5 Sudoku puzzles aren't interesting.
It definitely seems like you're fishing for rep. I'd heavily advise against it.
Then, if I post just one question, is 5 too much?
I'm just not sure what the value of sharing non-original puzzles of a very common variety is.
Why are you doing this? For one, copyright law probably means you can't legally do it.
And also, if the puzzles aren't linked in any way, you should generally post only one.
05:32
@Deusovi I don't know, it's just something I felt like doing
@Deusovi Alright
That definitely seems rep-fish-y.
Especially because you're so intent on doing this.
Like TGE said - where's the value in sharing non-original puzzles of a very common type?
I'm not super intent on it, I found my sudoku book earlier today, and was just wondering if I could share one of the puzzles inside. Then I wondered if I could share more than one. Nothing else to it
@Deusovi Oh. I was planning to post one question with 6 stand-alone grids (4x4, 5x5, up to 9x9). Is that alright, or should I split them up?
@Volatility It's probably fine. Posting multiple puzzles of the same type is really a grey area.
05:37
For my grid logic puzzle, I was planning on posting a pretty large amount of puzzles in one post. They would be linked to Stack Exchange images which each contain 5 puzzles (so as to make the post fairly short instead of image spammy, and also for other puzzley reasons)
0
Q: What am I supposed to say?

wildBillMunsonWhile at the bar the other day, a friend of mine slapped $500 cash on the table along with a piece of paper, on which was written MVR YCBMD AAVO JASVQ'M WBTBZ LLVXD'F YCGD. He said if I could manage to decrypt this text, and then say it three times, the money is mine. And I could sure use the ...

would this be okay?
Yeah, I know what you're doing - that's probably fine, since they're linked together pretty heavily
Alright, cool.
Anyway, I think I'll just hold off on the sudoku, and post a math puzzle
05:41
That cipher probably becomes a tongue twister.
One thing to consider while posting some puzzle is "is the solver going to enjoy this?" For example, posting lots of sudoku puzzles means either zero effort on part of the solver (plug into an online tool) or an unreasonable amount of effort (if you want them to show steps), and neither of these sounds fun.
@Ankoganit Well, most sudoku are posted with
but yeah, I get what you're saying
Computers aren't always helpful, anyway. I still remember when people 'solved' the sudoku in my page of puzzling without realising that it had a gazillion solutions without extra info. XD
 
2 hours later…
07:23
@TheGreatEscaper nice puzzle!
(although you made me force-quit a 3hr search for a 9x9 grid -.- )
 
1 hour later…
08:25
@Volatility thanks, and sorry!
Eh, it's all random anyway. I was more complaining about how long it was taking ;-)
Has your program set clue density or...?
How exactly are you trying to generate a grid?
@TheGreatEscaper did you say you knew a programming language?
I'm trying to generate a complete grid, and then I manually decide what clues to put in
@volatility ahhhhh, gotcha
@TrojanByAccident it depends on how you define 'know'
08:33
@TheGreatEscaper I need an assistant to help me write an interpreter for two, maybe three programming languages, if you're interested
I definitely don't have the kind of experience for that xD
I knew it was hiding diagonally as the first/last letters of all answers didnt formed anything useful and hence I was forming a word with first letter of a word, second letter of word, third and likewise..seems like it was backwards :)
@TheGreatEscaper lol, it's simple
I'm just an idiot that needs someone to check my work
@Techidiot was that ne ws to you?
:P
@TrojanByAccident just head over to StackOverflow
You'll be able to get proper advice/checks from experienced programmers.
@TheGreatEscaper Ah, yeahnoimnotgoingthere
<-- isnub
hence the name
@TheGreatEscaper It was too late until I figured out the news ;) Solving a puzzle on cellphone is quite a task
08:57
@Rubio My goodness is it TISSUE?
@Will I don't see how "flow" gives "issue". (also, there'd need to be an "it" before "may", but we only mentioned that after the clue was posted)
"issue" as a verb I think
Hm, how is that "flow" though? Am I just missing the obvious?
I think it might be tissue, actually
08:59
hold on while I re-analyze the clue
Yeah, I think Will's right then
Rubio strikes with obscure synonyms again :)
first-last, though? @Will
Last letter of "first"
Same for "east-west"
(@Rubio I think east-west was fine for that purpose, FWIW.)
09:02
@Will How does ISSUE fits for the rest?
See my screenshot...?
@Will right, whoops :P
Yeah..
@Will same.
So the def is "flow...congestion"??
09:04
@Techidiot no, the def is "may help ease congestion"
@Randal'Thor : Did we finally conclude anything about the problem I discussed yesterday?
@Techidiot a TISSUE may help ease congestion
@TrojanByAccident : Did you had a look at it?
@AnimeshAshish We did - 50 is more likely to be evenly split than 500
Any algebraic calculation or intuitively?
09:05
I guess when I amswered with SIGNAL @Deusovi explained that may help with congestion should have been thing that may help congestion..So was confused a little
@Techidiot I'm confused about what you're saying
lol
@Deusovi : Any calculations were involved?
@AnimeshAshish The probability that 2n are evenly split is (2n choose n)/2^(2n).
Ah, So that's the catch. I am starting to love this.
yesterday, by Deusovi
That's not the same part of speech - it'd have to be "thing that may help ease congestion"
@TrojanByAccident that :)
09:11
Hey @Deusovi, can you further explain your above quote?
I honestly don't see the issue (pun intended)
Here's an easier example
"May help ease congestion" isn't a definition. Sure, it's a thing that a tissue does, but it's not a tissue itself.
Say a CAN contains things.
Contains things isn't a definition for can
Contains things is an adjective of sorts, i suppose it would be a definition for 'filled' or something like that (actually a bad example, but hopefully you get the idea)
@Will ha. haha. haa....
09:13
It's a verb phrase.
It'd define "is filled", but not "filled".
Personally I don't think it's too bad if you treat the wordplay as a pronoun, even if it's technically incorrect
Sid
Sid
I just thought of a nice cryptic clue... (At least I think, it is a cryptic clue)
Yeah that's kind of my thinking too
@Sid Go ahead!
Sid
Sid
"Crazy Indian Government carries out instructions for Growth and Development." (3)
09:16
That's awfully long for 3 letters o_O
Yeah...
Sid
Sid
It requires a bit of knowledge of the current Govt. But googleable
MOD, maybe?
It doesn't quite fit, but it vaguely seems to work
Sid
Sid
Nope/
GAD? :|
Google tells me that's a thing
Sid
Sid
09:18
Wait, that clue is probably not quite clear on the definition..
You know what, let it go. It isn't quite what I intended it to be...
What was the intended answer?
Sid
Sid
"DNA"- Def- Carries instructions used in growth and development(genetically). Current Indain Govt- NDA. Crazy means anagram.
Indirect anagram...?
Yeah, not too happy with the indirect anagram
I got told off for using those in a puzzle of mine once xD
09:21
(plus, the definition doesn't really work for the same reason)
Which one?
Page of Puzzling
it's the one with the 4x4 cryptic with clues out of order
Sid
Sid
Yeah.The def. was really bad. I couldn't think of something without giving away the answer..
I had an indirect anagram of NEED to EDEN, and 'leisurely, confused night birds' for SLOW
Hmm thought of this cryptic, I think it's nice
Postscript about tardy panels (6)
PLATES :P
Sid
Sid
Too fast.
09:34
Yours did made me think of "Second thoughts about myself after gym class? (7)"
P(ILATE)S
Heh, nice.
I love the surface reading on that one
@TheGreatEscaper Smokers should be smoker
Oops
Sorry!
Have made the edit.
09:49
0
Q: A Little Cryptic Puzzle

TheGreatEscaperNothing too complicated here, answer the six cryptics and find the answer to this puzzle :) Cult or area (6) Reshot fails strangers (6) Announces hole prices (6) Programming string about single smoker (6) Fungi, so treat salads first (6) Road before holy three-dimensional prefix (6)

@Sid The clue would not have been an easier for non indians.. BJP -> NDA is tough to guess by a non Indian ;)
@Deusovi MOD(i) led NDA ;)
@Techidiot Yeah, that's why I guessed that
@TheGreatEscaper Twas a nice distraction, although I think #5 should be more "firsts" than "first" and "holy" is a bit iffy for #6 :)
I've got 1, 2, and 5
10:05
I've got 2, 3, and 4
I mistekenly added a comment as answer. Holy!! :D
Yeah you did
Can you remove that @Deusovi ? Thats embarassing :p Mobile version is bad :(
Your answer? Already did.
Very quickly, in fact.
10:07
I deleted it after posting. Hope its not visible to >10k :)
Just got 6.
It is.
gugtn, everyone
? Goodnight :)
Have the people who solved the cryptics determined the final answer to the puzzle?
I might change holy to 'holey'?
@TheGreatEscaper What's the ? for? :P
10:09
good
ugt
night
'gugtn'
Alright, then :P
@TheGreatEscaper Just did!
Good ugt night to you too, Trojan :)
@TheGreatEscaper :P
:)
@Deusovi nice :) Can you see which one's the odd one out?
10:12
Nope!
...The last one, because it has two of the same letter?
(#4?)
Ooh, I think I see what you're going for - hold on
...nah, my rule gives two odd ones out
I think it is #4
#4
(my approach though, may be a little left of centre)
10:14
...Am I missing something? I got 4 and 5 to both be "odd ones out"
e... r... g... that's ...
I thought the rule was that (rot13) gur ahzore bs jbeqf vf gur cbfvgvba bs gur arj yrggre.
Technically #6 is debatable, but since #1, #2, #3, #5 follow the same pattern and #6 can follow it, it has to be #4?
unless I've suddenly lost my ability to count...
which is known to happen
Is my rule the same one that you all have? Or am I off-track?
10:16
@Deusovi left of centre
...oh, duh
I like mine better :c
I'm not sure I even get yours. How does your one work?
I don't understand what you mean tbh
first clue has three words, new letter is in third position
second clue has three words, new letter is in third position
ah
10:17
Ohhhhh.
sixth clue has five words (counting hyphenation as one word), new letter is in fifth position
works for 1236, but not 45
Oh well, Occam's shaver or something like that.
:P
Was "in the first three letters" really the rule though? :/
10:18
Nope
In the 3rd position
@Deusovi a little left of centre
...I'm an idiot
you could've done TENORS or TENSOR if you wanted to keep the pattern
But then people might not even notice that they're all STORE + *
You could just read down the third letters to see an answer :P
I didn't want to do tenors cos I had enough plurals already.
Tensor I didn't recognize as a word offhand, so...
When does the grid-logic fortnightly roll over?
I mean, not that I'm ready to post (a long way away from that :P), just wondering.
10:24
Whenever someone can be bothered to make the new topic.
That's been our system so far :P
oh wait, I think Lukas Rotter made a bot to post the new topics
@Will Sorry, catching up - it IS TISSUE, nice job
And here's where Deus gets mad at me. hehe
I'll not do that type of def again without proper indicator.
Don't worry, I already complained about that :P
Oh, I figured. Haven't gotten to it yet :)
CCCC: A canape could be the answer to all your problems (7)
PANACEA*
10:30
yup
Well that's a new word for me :P
alright, gimme a minute to come up with a clue
CCCC: Discharge electronic picture? (6)
not sure if I should apologize for this one :P
I tried to discharge electronic and found myself left with IC :(
ESCAPE?
@Will yep!
ddef with E-SCAPE - first definition refers to "escape" in the sense of "leak out of"
10:37
cute
Hmm, is "discharge" ever used in that intransitive sense?
here's another easy one because I'm still not satisfied with the harder ones I've been constantly toying with
"The gas discharged from the container"
CCCC: Desert someone in Jamaica (6)
I think so.
10:42
so "east-west" would have been ok for T huh. I had second thoughts; I couldn't find anyone using just east/west that way, only eastern/western. Admittedly I don't have a lot of depth of examples to search in.
I like PANACEA, that was good
ESCAPE made me groan. :)
oh crap that 7 is a typo (should be a 6) but I had to check on the oven & I need a mod to edit it
Personally I find both east/west and first/last questionable, but that's just me :P
First-last definitely works. :)
@Rubio That's exactly what I was going for :P
So ROs can't edit posts, just mods? or am I completely missing something
10:44
Not sure
Yeah I don't think I can edit.
And whee. I just got my mathematics tag bronze badge
@Deusovi Can you edit Will's (7) to (6)
...I did.
Several minutes ago.
huh.
Weird. It didn't update on my screen, just on the pinboard.
Ignore me :)
@will I feel like this is a ddef of INDIAN
Indo-Jamaicans or Indian Jamaicans are the descendants of people who came from India to Jamaica and are citizens or nationals of Jamaica. Indians form the third largest racial group in Jamaica after Africans and Irish Jamaicans . Along with the Chinese, they represent the wider Asian community on the island. == History == Due to deteriorating socioeconomic conditions in India under British rule, more than 36,000 Indians came to Jamaica as unskilled labourers between 1845 and 1917, mostly from North India (Rajasthan, Bihar, and Uttar Pradesh), with around two-thirds remaining on the island. The...
possibly?
10:48
Yeah
Not sure how that fits desert though (and also that'd be West Indian)
Thar, the "Great Indian Desert". It was a thought.
I'd indicate definition by example :)
(I didn't say it was a good thought. hehe)
Though "Jamaica" might be considered tenuous as it stands I guess
Sid
Sid
10:56
@Techidiot Yeah, you are right.
@Will I was thinking AFRICA but Jamaica isn't in Africa...
While we're contemplating Jamaica ... @Deusovi any thoughts on this one and its apparent derivation‌​? I want to know what receiving is doing in there - my explanation feels unsatisfying.
well that didnt work
No, that's right
I'm not sure about "received" either.
There. :)

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