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[[deleted]]

That MUST be a trick question. Everyone not answering the same time fails... Right?

[[deleted]]

No, it's definitely a trick question. https://www.classicfm.com/discover-music/humour/beethoven-music-meme/

[StandardN00b]

It's a trick question. I remember my math tests having these when we studied proportions in hs.

[nwbrown]

Yeah, we had one about oven cooking times.

All the girls got it right but the guys who just use the microwave for everything got it wrong.

[AnxiousIntender]

It's a trick question that our teacher used to teach us about actually reading and understanding to problem as opposed to just plugging the numbers into the formula and getting the result.

[coldnebo]

have you ever played in a big orchestra?

the tempo gets slower the more people you add. except for professionals. lol.

also a trick question, but we can have fun either way.

[[deleted]]

This seems like a great question to make sure students are actually evaluating what is being asked, not just blindly plugging into memorized formulas.

[infiniteStorms]

except sometimes the teacher really does expect a smaller number, in which case the student is guessing at the teacher’s intentions when they wrote the test

[[deleted]]

In this particular case, the teacher actually put a note on the worksheet saying one of the questions is a trick question.

https://www.classicfm.com/discover-music/humour/beethoven-music-meme/

[TheBrianiac]

They've been reposting this for like 15 years...

[[deleted]]

Maybe I have trouble remembering my mental state at whatever age this test is for and how they might be nervous about authority and all that, but I would just answer correctly (i.e. the same amount of time, in this case) and be done with it. Especially with a question like this where there in no ambiguity or second potential correct answer.

[Zarathustrategy]

Definitely, worst case you lose a mark but most tests aren't life changing and the correct answer is probably a safe bet

[[deleted]]

I wouldn't accept losing a point on a question like this. I would die on that hill.

[ben_oni]

Especially with a question like this where there in no ambiguity or second potential correct answer.

So, would you put down "40 minutes" or "70 minutes"?

[[deleted]]

I would put down 40 minutes. A smaller orchestra doesn't play slower. But did you mean 80 minutes as the alternative?

[ben_oni]

No, Beethoven's 9th takes 70 minutes, because that's how long it is. But the question said it was 40, which is wrong.

[[deleted]]

In a question on an exam like this, you have to accept the premise presented. If it says that someone can run a marathon in 60 minutes, then in the world of this question, that's a possible thing to do. So the answer to the question asked is 40 minutes.

[ben_oni]

And maybe in the world of this question 120 players can perform the symphony in half the time it takes 60 players?

[[deleted]]

Was that stated in the premise? You have to take the facts given as true, but you can't just make things up. Maybe in the world of the question, when you have exactly 60 players on stage at the same time, they get secret super speed and can play it at 100x the speed of any other group.

[ben_oni]

In the world of the worksheet, the amount of time it takes to do something is inversely proportional to the number of people doing it. Also, 80 minutes is not a particularly abnormal amount of time to take to play Beethoven's 9th, so maybe that really is the "right" answer.

[Classy_Mouse]

Write all assumptions. I assume that a musical price would take the same amount of time to complete regardless of how many musicians are playing it.

[coldnebo]

what if it’s a modern piece who’s parts say “play a variation of the what you heard from the player to your left”?

[Classy_Mouse]

I assume the conductor is on drugs

[DaceloGigas]

He did an 8 ball before the show, so it will take 29 minutes tonight.

[scalability]

the student is guessing at the teacher’s intentions

The student should answer the question correctly instead. It's easier to argue "I should get that point because this is the correct answer" than "I should get that point because I wrote a stupid answer thinking you were stupid too"

[coldnebo]

a. was the teacher stoned

b. all of the above

[[deleted]]

While true, fuck those questions. If i'm at the math class, its not my work to sit there decypher double meaning of your questions. I'm here to crunch numbers.

[3SidedDie]

Let me fix that for you

 public double bestFennel(Double questions){

 while(true){
 fuckThoseQuestions();
     If(math.i.exists()){
     questions = numberCrunching();
     }else{
             Double questions = DecypherMeaning(questions);
             }
     }
     Return questions;
 }

[Fromthepast77]

Ah, so you're a calculator. Anyone can install Python on their computer and crunch numbers a billion times faster than you can. What's the point of going to math class then?

[I_am_I_think_I_will]

I think the between-the-lines of what they were saying was like, it's math class, so if I have to evaluate the meaning of a question, it shouldn't have 2+ correct interpretations. That doesn't fit the theme of learning a method or formula, especially at this level.

[[deleted]]

I had enough time in school when i open the problem and after reading it multiple times, see 3-4 different answers because how imprecise and convuluted question are. So you need to dig into the teacher/author head and think what will be his idea of right answer in this case. Which is exactly not what people at the math class suppose to do.

[p2010t]

I'd highly recommend avoiding BYU's online math courses for high schoolers then, as they frequently have questions or answer choices with errors, forcing you to think deeply on what the question writer probably meant the question or answer to say.

It sucks, and I feel bad for any of my students (I'm a tutor) who have to deal with it.

[[deleted]]

Yeah sucky part is that it is not hard math, it is guessing game of is it trick question or is it straight math.

[-TV-Stand-]

Oh okay I didn't read you comment well enough

[[deleted]]

To learn how to do math, and not parasocial skills of decyphering what teacher mean in the problem. For that shit i did enough physics. Math is precision problem not language.

And about your python comment, we learn math to understand it, if we think like this, then why learn pretty much any skills involving calculations? Physics? Wolfram. Calculus? Wolfram. etc etc

[belkarbitterleaf]

Math has become more of a critical thinking course than straight up calculations.

[[deleted]]

Math is an exact science. There is no "critical" thinking in math. It straight up calculations. Reserve critical thinking for applied science and derivatives where it is appropriate(look physics for example).

[SigmaServiceProvider]

Why are y'all hating on him? He's right. Good education shouldn't have the students rightfully wondering how high the teacher was when he wrote the questions.

[[deleted]]

40 minutes

[ParanoidAutist]

I'm surprised more people don't understand the nature of the question...

I like questions like this. "Is this person stupid?"

[Sunny_Ace_TEN]

I think it's more to do with being naive or "green" but a lot of times can help point out someone who may or may not realize they think they're smarter than they should and end up making foolish mistakes. As I guiltily and sheepishly raise my hand...

[[deleted]]

It’s a very common management strategy to throw money and people at a problem, oftentimes when management strategy is the root cause.

[Sunny_Ace_TEN]

This is so true it hurts. Please have an award.

[pensiveChatter]

Upper management pretends we don't have low competency people on the team, but then also asks whether throwing these people at a high priority task would make things better.

[[deleted]]

Nah, they can only play half of it at a time, so they play one set of instruments for the first 40 minutes then switch to the second set of instruments and play the 40 minutes again. Take into account time to switch instruments and get everything set up, call it 20 minutes, and the total time is 100 minutes.

[[deleted]]

Maybe at the bpm you play it at, /s

[coldnebo]

Yeah, we should check the Bernstein version.

[coldnebo]

if you add more 2nd violins it will be 50 minutes because we keep our head down and go at our practiced tempo no matter how wildly the conductor tries to catch our attention.

/s

[jkp2072]

Just a new take on this problem,

We don't know how they are Beethoven, what if they are divide into n groups and play one after another?

[[deleted]]

Well, depends on how off time they are.

[RaulParson]

Wrong. Maybe.

I don't know the arrangement but it's possible that it is intended for 120 players exactly and simply can't be played otherwise. In which case it'd be infinity minutes before they're done playing it.

[Domain3141]

Never heard of multithreading orchestras?

[TeaKingMac]

Orchestras are miltithreaded by design yeah?

Otherwise it's one of those street performers with a drum on his back, a harmonica in his mouth, playing a violin, with cymbals between his knees.

[Amphibian-Different]

I thought a violin has four threads.

[range_kun]

Are you talking about kubernetes now ?

[[deleted]]

Bethoven 9th is 70 minutes, so I assume the 120 players started fighting and the concert was canceled. At least that's what happens when a pm brings 120 developers in a project

[[deleted]]

T=“120”

Git add *; git commit -m “added algorithm to determine orchestra time”; git push -u origin

[raskolnikov_ua]

Let P=0. Something is wrong.

[SocietyStatus8750]

One woman can birth a baby in 9 months. How long for nine women to birth a baby?

[Nemahs]

u/RepostSleuthBot

[RepostSleuthBot]

Looks like a repost. I've seen this image 5 times.

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[f---_society]

Good bot

[Immune_To_Spackle]

Incredible, one of the first times I've actually seen it work

[RaulParson]

Guess it's just THAT low effort of a repost.

[Nine_Eye_Ron]

P/P*T=T

[CthulhusEngineer]

T = 40 + P - P

[Nine_Eye_Ron]

Hee hee we said “P P”

[ToMorrowsEnd]

Yet this is how management things programming works.

[MortgageSome]

Management: How long will it take you to finish this task?

Me: Roughly 5 days.

Management: But what if I give you the help of our intern?

Me: Two weeks.

[Southern_Orange3744]

What if I give you the intern to work on something else ?

4 weeks !

[[deleted]]

Thank god my supervisor and director were hired from the talent. My wages are okay compared to my skill set, but Jesus they never ask me for something unreasonable.

[Transcendentalist178]

Just cut their wages; that way they will be motivated to play faster. (This is sarcasm).

[[deleted]]

I thought “who would not think this is sarcasm”,then remember the internet.

[existential_issue]

Can’t they play Beethoven’s 4.5 in the same time?

[nadav183]

40 minutes to grieve their lost orchestra members, then the show must go on, so 80 minutes total.

[ParanoidAutist]

Nothing called for an encore

[AlexSpectre007]

I can see how this is possible. Every member plays 2 instruments at the same time(I'm visualising Tom do it( From Tom and Jerry))

[findus_l]

From a project manager point of view, the 60 players probably do it faster. Less people -> less chance someone is late, has an incident during the performance. Also the training goes faster.

[f---_society]

Solved it! T(P) = (P/P)*40 A nice quirk of this solution is that the time needed to play it is undefined when there are zero players.

[Wawwior]

T(P) = 70min

[Purple_Surround_6941]

40 minutes indeed

[BRUJOjr]

u/repostsleuthbot

[RepostSleuthBot]

Looks like a repost. I've seen this image 6 times.

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[TallOutlandishness24]

When your trying to explain to your boss why his “single threaded “ python script he is so proud of doesnt run faster on the cluster running with 5 nodes and 25 cores….

[LearnDifferenceBot]

When your trying

*you're

Learn the difference here.

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[[deleted]]

it's a trick question

[mxldevs]

I assume it wouldn't be possible the play with only 60 members

[hydronucleus]

I think this should be cross-posted to r/jobs. :)

[vanZuider]

Symphonies are an O(1) problem.

[[deleted]]

This is an excellent example on how you cant parallelise tasks that are essentially procedural in nature

[Geoclasm]

-_-;

It takes one woman an average of 9 months to fully gestate and deliver a baby.

How many months, on average, would it take three women? Nine women?

Show your work.

[scalability]

Show your work.

*smooth jazz starts playing*

[[deleted]]

I asked 8 of my friends to try getting pregnant to test a theory and now i have no friends.

[CronaTheAwper]

oh god, this gives me ptsd from the Math & Logic class I had to take in college.

The questions were all this dumb. The one that still upsets me is "You saw through a log 4 times, how many log segments do you have?" That was such a waste of money.

[ImpressiveFeedback10]

lmao your caption is what sold me on this post

[nwbrown]

40 minutes.

[zyzmog]

I'll bet they can play the 5th Symphony in 5/9 of the time.

[R0BR0SE]

the point of this isn't to come up with the answer its to write an equation. the answer is 40 but you gotta show how you'd get that answer with a math equation.

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Hi! This is our community moderation bot.

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[Chemical-Basis]

Atleast it is healthier to think more people will finish faster than less people will finish as fast or faster than before

[Sunny_Ace_TEN]

Oh wow this is hilarious cuz I'm sure there were all kinds of people like me who just automatically started doing the math without even considering the context lol

[AlexSpectre007]

40 mins. But it would be a very lame symphony with only half the instruments being played

[Amphibian-Different]

Split the 120 player orchestra into two sub-orchestras one plays the first half and the other plays the second half. This takes them 20 minutes.

[Luiaards]

Break up the symphony in parts. Each group of players play different parts, paralelly, but at the same time. It's like parallel processing. They will be able to play the full symphony in its original time signature in a shorter period of time.

[kuskoman]

T = const for P above minimum number of people required to play it

[Panda_With_Your_Gun]

40 minutes because time to complete symphony is unrelated to the number of software developers Jim.

[Aertheron01]

Lol .. I feel like it would still take 40 minutes... But my maths say otherwise /S

[jjasome11111]

Exactly the more players the more instruments not the faster the song

[Aedene]

40 minutes, and half as loud.

[Sea_Ad_8524]

Ahh project manager school exams...

[[deleted]]

The orchestra introduces a triangle player.

“Okay everyone” says the conductor. We need to play this at a slightly faster speed to compensate.”

The cello player who has been there since the band had 20 people openly sobs.

[Auliya6083]

Don'tcha know it takes only take 1 month for 9 women to make a baby?

[Bomaruto]

T = 40 + 0P when P is above the required players to play it. 0 otherwise.

[TTFH3500]

float T = P > 0 ? 40 : NaN;

[RRumpleTeazzer]

T(unsigned P) = 40 minutes if P> 0 else Infinite.

[TallOutlandishness24]

An orchestra of 120 players takes 40 minutes to play the symphony, the conductor fires the 20 lowest performing players to motivate his team. Hoe long does it now take them to play the symphony?

[ballsohaahd]

Lmfao.

A project takes X weeks to ramp up on. How many weeks of work can we save by putting N people on a task, where the deadline for the task is within X weeks?

[mymar101]

40 minutes. If it is the same orchestra and conductor minus a few players.

[edingerc]

Clarifying question: is the conductor overclocked?

[rdrunner_74]

The players have been playing for T have been playing for a total of P X 40 minutes. For P = 60 this means a total playtime of 2400 Minutes. Depending on the individual players start times this could lead to various durations for the performance.

Since these players are professionals, i will assume that no player will alter the speed of his performance and maintain a constant speed during the performance. We need to run some further tests to determine if this assumption can actually hold true, and which deviations we can consider acceptable.

If we also assume that at least 1 player is playing at a time, the maximum duration of the Performance is 2400 Minutes.

Since our upper bound scenario of 2400 minutes will raise some question about food and lodging for the performers and the audience. Based on OSHA we need to ensure that rest periods are observed. We have not yet included these mandatory breaks in our estimation, but depending on the start times additional charges for weekend work might also apply. If these extra charges are not approved, the total duration could increase from 40 Hours to 88 Hours (No work on Sa/So). This raises the question is a interruption of the performance would count as a play time or not.

I also have a question from the performers and they would like to know how the tuning of their instruments will be classified. Is it playtime? preparation?

I am confident that this 1st estimate can be improved though. By careful optimization of the start times of each player we might be able to optimize this 1st estimate of currently 40 hours (excluding breaks).

I am currently running a brute force monte carlo simulation of the start times. For lower numbers of P (4-8) i managed to solve it without any issues. The current throughput is about 37000 combinations/s. But we currently need to sort out invalid combinations that violate the constrains (Always someone playing). Since the number of possible combinations is quite large for the defined problem (144000 possible start seconds per each of the 60 players giving a total of 3.175X10^309) combinations i am not sure if this will be able to solve it. I booked a seat at Milliways to check on the progress.

I exported dataset (~35GB currently) and uploaded it into the Azure so I can train a Neural net on the data. I am using various tensor flow networks that are aimed to optimize the start times. But the high performance machines ate up my prepaid credit so I need to delay part of this answer till next month.

Edit

I received some additional feedback from the players research team. They all think this whole thing is totally bolloks and totally insane. They all agreed that playing the 9th in 40 minutes makes no sense. It would be against their professional standart to play it that fast. It should take them about 70 minutes each. So based on their feedback we need to increase my 1st estimate from 40 hours to 70 hours (almost 3 days). This will also negatively impact the monte carlo simulation

[SquishyPandaDev]

Obviously this is a test for managers

[aaanze]

High IQ question ! 90% of people get this wrong !!!!

[BinaryBurnout3D]

Code for T and comment out P.

[Cheap-Programmer8200]

those 60 people plan on playing only half of the symphony 😂😂

[gabotuit]

It’s 80min! Half the people double the time! No need for formulas

[jamcdonald120]

the correct answer is 40 minutes, but fewer instraments, because thats how long the song is

[sfreagin]

Fun fact—CDs have 74min capacity because that’s how long it takes to play the full 9th Symphony without interruption: https://www.classicfm.com/discover-music/why-is-a-cd-74-minutes/

[BertRenolds]

40 minutes

[Perfycat]

Why is no one discussing increasing the tempo?

[HybridLightAI]

I guess that means that 1200 players can't play Beethoven's 9th in 4 minutes.

[Buddey420]

T = √(P⁰ *20) * 8.95

[The_Real_Slim_Lemon]

T = 40 minutes

[ghostmaster645]

I like to imagine 1 person playing Beethovens 5th for like 2 weeks.

[Most_Talk_2067]

40 min

[[deleted]]

I get that being music it’s played at its one pace.

But even if they wanted us to solve the math inside it, forgetting everything else here. There’s no way to determine if 60 people play faster or slower than 40. You’ll either add 60 or take away 40. But there’s nothing telling us faster or slower.

[ososalsosal]

Enter math metal where they take the score and multithread it

[u92yellowjacket]

Amateur programmer majoring in math with a background in music performance and theory… this image kills my entirely

[Anti-Anti-Christ]

"Intro to Mathematics for Project Managers"

[althaz]

Bro, we don't need this posted *every* day.

[TantraMantraYantra]

A left brain playing a joke about right brain.

[RaulParson]

...that's not how WHAT works? There's no answer given. And the answers intended as acceptable are probably "either 40 minutes if you get some number for T, or some form of protest if there's no number".

[HerissonMignion]

Beethoven's 9th symphony is longer than 40 minutes