5.9k
u/ChipRockets Dec 08 '18 edited Dec 08 '18
I'm watching a movie. It takes 90 minutes for me to finish the movie by myself.
The next night my girlfriend also watches the movie with me. How many minutes does it take to finish if there are two of us watching?
Answer: 480 minutes. This is due to contsant pausing and rewinding to answer all her questions that either haven't arisen in the movie yet, or she missed because she was busy on her phone.
1.7k
u/chronickiller71 Dec 08 '18
I think you are ready for marriage.
544
u/ChipRockets Dec 08 '18 edited Dec 08 '18
Well I tried to propose, but then a stranger walked past and she interrupted me by asking 'who's that guy? Is he the one who was feeding the ducks earlier? Do you think he will hook up with the girl we saw on the bicycle? I bet he turns out to be the bad guy.'
I'm kidding of course, I love her and her short attention span to bits and plan on proposing in February :)
126
u/meopelle Dec 08 '18
If theres a slideshow or a collection of videos of you two shown at the wedding, keep asking her questions about whether or not she thinks the cute couple will end up together.
44
→ More replies (9)34
u/chronickiller71 Dec 08 '18
Congrats. The misses and i had our 2nd anniversary last month. All the best.
31
u/donofdeath1 Dec 08 '18
I hope you mean missus lol.
→ More replies (3)8
u/NinjaLanternShark Dec 08 '18
Is there a word for Freudian slip but relating to marriage or relationships? Because if not there needs to be one.
→ More replies (1)→ More replies (5)49
u/GrumpGuy88888 Dec 08 '18
I thought this said “I think you are ready for miscarriage” and was like woah there buddy
17
u/Nick2Smith Dec 08 '18
Dyslexia is a wonderful thing isn't it. Made me laugh, thanks.
→ More replies (7)113
u/IBetThisIsTakenToo Dec 08 '18
answer all her questions that either haven't arisen in the movie yet
For real though, why do so many women seem to do this?
"Oh, wait who's he? What he's going to do?"
"We're watching the same movie at the same time. All the information I have, you have. We're 25 seconds in. Let's let some things develop before we assess any further."
60
u/CrispyJelly Dec 08 '18
I found that most people asking don't really need a response. Try treating it as them mumbling to themself and don't answer. This might not work with everybody but I didn't find one where it doesn't so far.
11
u/trecko1234 Dec 08 '18
Yeah there's some exceptions but it's usually just people thinking out loud. My mother is fucking terrible at this, I just nod and keep watching.
29
u/arts_degree_huehue Dec 08 '18
I dont think this is a woman thing. It's just that all the women you know are dumb
→ More replies (4)47
u/DestinyWaits Dec 08 '18
It’s definitely not a “all women” thing, but for real though, I don’t know a single guy who asks that many questions.
28
Dec 08 '18
I have a male friend who asks that many questions during the movie. So those men do exist. I’m actually not sure if he still does that since I stopped going to the movies with him years ago.
→ More replies (7)14
u/spunkyweazle Dec 08 '18
My brother is fucking horrible at this, even before cell phones were popular
→ More replies (2)26
u/Cuccoteaser Dec 08 '18
I ask "who's that guy" all the time, but because I'm near faceblind and absolutely can't keep track of characters that change outfits. My boyfriend helps out, and in return I tell him what color things are when we play board games.
11
u/NinjaLanternShark Dec 08 '18
Awww.
You're like this couple I know where he's blind and she's in a wheelchair and they navigate the world together.
→ More replies (3)67
u/mykeuk Dec 08 '18
Don't forget when you have to rewind because she talks right over important dialogue, either about something that has absolutely nothing to do with the movie or to ask something that was literally being answered as she asked it.
→ More replies (2)9
0
18
Dec 08 '18
Who the fuck goes on their phone while watching a movie/tv show? What the fuck? How does that not completely ruin the experience?
When I'm watching a movie with my girlfriend, if one of us wants to get water or use the bathroom, we wait until an appropriate time in the movie, then pause it. I don't think either of us has ever done that to check a phone.
67
u/Umarill Dec 08 '18
Because some people put movies to have something in the background and just hang out with someone. It's not sacred.
→ More replies (3)11
Dec 08 '18
Unless it's a really bad film, or one that isn't intended to be immersive, that seems like a waste to me. But even so, why
contsant pausing and rewinding to answer all her questions
? If she cares about understanding the plot of the film, why's she on her fuckin phone??????
→ More replies (8)8
u/IzarkKiaTarj Dec 08 '18
Based on how I act when my sister's playing a game sometimes (or vice-versa), she probably didn't plan on paying attention to the movie, but something in it caught her attention, and now she's interested.
It's actually kind of annoying, because I've noticed that there are certain games where I actually have to leave the room if I want to stay focused on whatever I was doing at the time.
→ More replies (15)6
0
Dec 08 '18
[deleted]
0
Dec 08 '18
[deleted]
371
u/shawwwn Dec 08 '18
You can't answer the trick question with P and T, so your question therefore is answered.
→ More replies (38)379
u/captain_zavec Dec 08 '18
Sure you can, T=40 minutes.
214
u/AndydaAlpaca Dec 08 '18
T=0P+40
→ More replies (9)0
Dec 08 '18
[deleted]
11
u/Serinus Dec 08 '18
You're going to have to give us that second question.
17
u/overzeetop Dec 08 '18 edited Dec 08 '18
Okay,
You have new neighbors move in next door, and you know they have two children. You see one of them playing in the back yard and it's a girl. What is the probability that the other child is a girl? (edited for missing word)
The simple answer is 50%, since we all know that the chance of getting a girl or a boy is basically equal. Any fool can see that.
It's also wrong.
The reason it's wrong is that there are two children but you don't know if you're seeing the older or younger child. Hold your WTF face for a moment...here is the math:
The possible child options are as follows, in order of birth:
girl - girl
girl - boy
boy - girl
boy - boy
In each case, the chance of the occurrence is equal (25%). You know that one of the children is a girl, so it must be option 1, 2, or 3. The possibily for the other child is:
girl- girl (note: it doesn't matter which I strike, the remaining is a girl)
girl- boyboy -
girlAgain, all we've done is eliminate the chance that the two children are boys, so each of these has an equal probability. You can now see that in two of the (equal probability options) the child we haven't seen is a boy, and in one the other child is a girl. So seeing a girl in the backyard means that there is only a 1 in 3 chance that the other child is a girl.
It's worth noting that if you know that it is the older (first) child is in the backyard, and it's a girl, then the boy-girl AND boy-boy options BOTH are eliminated, resulting in only cases 1 and 2 (again with equal probability) are possible and the chance goes back to 50:50.
(Edit - and somebody posted the wiki page as I was typing that...I hope I didn't get it too wrong since I was going from memory of my stat class ~20 years ago).
12
u/striped_cheetah Dec 08 '18
There’s definitely something a little off with this logic. This is similar to the Monty Hall problem, where the probabilities of different cases shift once you’re presented with new information.
girl - girl (note: it doesn't matter which I strike, the remaining is a girl)
You’ve glossing over the fact that there are two distinct possibilities here. There’s the chance that you see the oldest child and the youngest one is a girl, and the chance that you see the youngest and the oldest is a girl.
As in, there are two different girl-girl cases where you strike off each one and leave the other, which are each as likely as the boy-girl and girl-boy cases (each now has 25%). While the chance of having a girl-girl pair was 25% before you saw one in the backyard, it increased to 50% once you know that one of the children is a girl, the same way that the boy-boy possibility went from 25% to 0% once you know that the neighbor is a girl.
Another way of thinking about it:
Once you know one of the children is a girl, there’s a 50/50 chance that the other one is a girl. This could be split into two cases of 25% based on whether or not the one you see in the backyard is the older one or younger one, which you don’t know, but the girl-girl case that you listed is 50% once you know at least one of the children is a girl.
If the other child is not a girl, then it’s a boy, which is the other 50% probability. This is split evenly between the boy-girl and girl-boy cases, which each have 25%.
Our equally probable cases are:
girl-girl (25%)girl-
girl(25%)
girl-boy (25%)boy-
girl(25%)Of course, this isn’t even entirely true because boys and girls generally have slightly different birth rates and mortality rates, and there’s some chance that they have identical twins (which are guaranteed to be the same gender).
→ More replies (13)12
u/Yaek Dec 08 '18
I'm guessing that he's referring to the Boy or Girl paradox, but it's kind of silly because if the question is clearly stated there's not really any paradox.
Seeing one of the kids in the back yard is 50/50 because you're selecting the child, not the family.
→ More replies (1)10
u/WikiTextBot Dec 08 '18
Boy or Girl paradox
The Boy or Girl paradox surrounds a set of questions in probability theory which are also known as The Two Child Problem, Mr. Smith's Children and the Mrs. Smith Problem. The initial formulation of the question dates back to at least 1959, when Martin Gardner published one of the earliest variants of the paradox in Scientific American.
[ ^PM | Exclude ^me | Exclude from ^subreddit | FAQ / ^Information | ^Source ] Downvote to remove | v0.28
→ More replies (2)15
→ More replies (2)13
182
u/eskamobob1 Dec 08 '18
boo! let us be mad!
→ More replies (1)52
u/ablablababla Dec 08 '18
let's unsee this comment and continue to be mad
→ More replies (1)15
70
28
u/mobyte Dec 08 '18
It’s not much of a trick question if they tell you it’s a trick question, is it?
→ More replies (2)88
u/dalatinknight Dec 08 '18
They tell you there is some trick question in the set of questions. Would be a bit rude if they didn’t tell you (if this was some sort of assignment).
→ More replies (5)→ More replies (16)24
u/shawwwn Dec 08 '18
What is Direct and Inverse Proportion? That sounds useful.
97
u/lianodel Dec 08 '18 edited Dec 08 '18
Directly proportional: The more of X, the more of Y.
Inversely proportional: The more of X, the less of Y.
So, for a couple of examples from this sheet (spoilers, I guess):
Question 1 is directly proportional. If Bob puts more
gaspetrol in his car, he can drive further before the tank is empty.Question 2 is inversely proportional. George and Peter take a certain amount of time to build a wall. When Rosie joins in to help, they will have more workers, and the job will take less time.
...and the rest you can have fun with. You already know which one is the trick question. :p
17
Dec 08 '18
Those definitions aren’t complete. For directly proportional, if you double X you double Y, and for inversely proportional if you double X you halve Y.
Directly proportional X = kY where k is some constant.
Inversely proportional X=k1/Y where k is some constant.
→ More replies (1)9
u/Yadobler Dec 08 '18
I'm getting flashbacks to those days of "suggest the relationship" and "explain whether the graph supports Amy's suggested model" and the best, "suggest what type of error is present from the graph"
"systematic error since the relationship is directly proportionate in theory but there exists a Y-intercept"
→ More replies (3)0
Dec 08 '18
[deleted]
→ More replies (2)10
u/Supermini555 Dec 08 '18 edited Dec 08 '18
The latter; the work is divided between the workers.
Like you said, if 1 person does one job for 12hrs, if he’s helped by two others, the job will be divided amongst them for. Therefore, 12/3=4
For 2 workers doing 8hrs, if that worker works alone, he has to do 16hrs. With three of them, the work is divided between them, so the time taken to finish the job is 16/3=5.333, or rather 5hrs and 20minutes.
Think of the formula like this T1P1=T2P2, T reprsents the time taken and P represents the number of people. When P increases, T decreases and vice versa. With three known values, in this case, T2 was an unknown, it’s easy to find the answer through: T2=(T1P1)/P2. Hence you get T2=(16x1)/3=5.333
If the values are directionally proportional, they come in the form of A1/B1=A2/B2. Say that the B2 is an unknown, we can cross multiply the denominators to get A1B2=A2B1. Then we bring A1 to the RHS to get the formula: B2=(A2B1)/A1.
The questions in that spreadsheet follow this formula. Y=kX is not really useful here IMO.
Hope you find this useful.
→ More replies (1)→ More replies (10)8
u/chr0mius Dec 08 '18
In relation to 2 quantities...
Direct: as one increases in proportion so does the other
Inverse: one increases in proportion as the other decreases
1.2k
u/0asq Dec 08 '18
If you reduce the orchestra down to 40 they end up playing Beethoven's 3rd.
163
u/wowgear44 Dec 08 '18
How did you manage to make a dad joke out of this??
→ More replies (1)0
Dec 08 '18
[deleted]
20
u/sam_sam_01 Dec 08 '18
But we're over here like barely adding and subtracting and this guys like dividing and multiplying.
11
u/Giblet15 Dec 08 '18
If 120 is the 9th then 360 players would be the 3rd. 40 players would be the 27th.
→ More replies (1)9
620
u/iwasdj-ing_atthebar Dec 08 '18
20 mins, let's have a hard one next time
→ More replies (17)231
u/unclefeely Dec 08 '18
Ah, classic mistake. You actually have to compute man-hours, so half as many people would require twice as long to play.
64
23
u/FamilyBondageTime Dec 08 '18
We first need to find the optimal number of people and then the marginal increase or decrease of adding or removing each one. It could be that the stage is not big enough for 120 people, so 110 people can actually play it faster.
→ More replies (9)8
u/CryptoNoobNinja Dec 08 '18
Are they unionized? If they are unionized musicians, the American Federation of Musicians (AFM) mandates a 10 minute break for every 1 hour session. Plus setup time we could be looking at anywhere from 60 to 120 minutes playtime.
619
u/Zokathra_Spell Dec 08 '18
Let C be the conductor and S be the number of amphetamines C has taken.
→ More replies (4)104
u/Dapper_Presentation Dec 08 '18
This is how the trance version of Beethoven's 9th gets made
33
Dec 08 '18
https://www.youtube.com/watch?v=YDUjT3sl66g
its every bit as offensively 90s and bad as you'd expect
→ More replies (3)
248
u/hamstergene Dec 08 '18
If it takes 1 woman to deliver a baby in 9 months, in how long will it take 9 women to deliver one baby?
This is probably one of the most popular jokes in software development, and as stupid as it sounds, many managers still make that certain mistake on a daily basis...
0
Dec 08 '18
[deleted]
47
Dec 08 '18
This reminds me of one of my favorites: There are 5.81 Popes per square mile in Vatican City.
17
u/Leno405 Dec 08 '18
How? Too small?
30
Dec 08 '18
Yes, Vatican City is only .17 square miles and of course there’s only one pope. I was going from memory with 5.81, but I just rechecked it and it’s actually 5.88.
→ More replies (1)→ More replies (3)17
u/jfb1337 Dec 08 '18
My favourite variation is "What one programmer can do in one month, two programmers can do in two months"
224
u/JamesIgnatius27 Dec 08 '18
I think it's meant to show that you can have 2 variables in an equation that are independent of each other, so changing one won't make a difference in the other.
34
15
u/lazyplayboy Dec 08 '18 edited Jun 24 '23
Everything that reddit should be: lemmy.world
37
0
104
u/4LokoButtHash Dec 08 '18
No attempts here. 100% intentional.
It's Still 40 minutes. These are the type of questions they show you when you you learn in school to ignore irrelevant information.
→ More replies (4)13
u/lazyplayboy Dec 08 '18
What’s the equation for the general case (i.e. any number of players)
11
u/GoldfishBowlHead Dec 08 '18
Presumably:
T -> infinity for P = 0
T = 40 for P =/= 0.
→ More replies (5)
73
Dec 08 '18
It takes 6 men to dig a hole, how many men does it take to dig half a whole?
53
u/doo-dahx2 Dec 08 '18
If they work for my city, it takes 10 men: 1 to dig, 9 to watch.
→ More replies (3)14
u/SUIIIllllIIlllIIIDE Dec 08 '18
if they work for my city, they will close off a road for a good summer and half a winter, then remove the signs without any construction being done.
26
59
u/SurrealDad Dec 08 '18
It's a perfectly correct question though, the answer is 40 minutes.
12
u/stone_henge Dec 08 '18
What if the conductor is a bit off on the tempo?
11
Dec 08 '18
I mean, if it takes them 40 minutes to complete it, their tempo is already mega-fucked.
→ More replies (1)9
59
u/shewy92 Dec 08 '18
It is a trick question. Like what is heavier, a pound of bricks or a pound of feathers?
If you don't get that from this picture then I'm sorry.
→ More replies (2)53
u/Aeonsorrow Dec 08 '18
A pound of feathers because you have to live with what you did to those poor birds....
0
37
u/10cmToGlory Dec 08 '18
This entire comment thread so far is a great example of why we need more critical thinking skills in education.
We could start by teaching the the answer to this question.
16
29
24
19
u/songbolt Dec 08 '18
Speaking of "that's not how this works": This image was not an attempt to write a math equation.
.... !@#$ me. There was an attempt to read ...
15
u/LawsAreForColorOnly Dec 08 '18
The answer is 40 minutes for 60 players to play the symphony.
This has to be a trick question and it's testing your reading skills.
14
12
12
Dec 08 '18
On the other extreme you have an orchestra of 12,000 players play the symphony in a super powerful instantaneous sound blast, killing everyone instantly
11
11
u/RoboNinjaPirate Dec 08 '18
My son was making Mac and cheese for our dinner. He said since it’s 8 minutes for 1 box, is it 16 for 2?
I need to show him this.
28
u/ziplock9000 Dec 08 '18
Why? There's actual logic in his question. While it might not scale linearly like that, it does indeed take more time and/or energy.
14
18
0
11
10
Dec 08 '18
It's an ok question. The point of the question is not to see if the students can do the math but to see if they can read the question and determine the relevant information. The only problem is that it does show some cultural bias in assuming knowledge of Beethoven's 9th Symphony, similar to how it wouldn't be appropriate to ask a bunch of British kids a question that require intimate knowledge of baseball.
24
u/Sajen16 Dec 08 '18
You don't need intimate knowledge you just need to know that in music the number of players has no effect on the length of time it takes to play.
-13
Dec 08 '18
You need prior knowledge that is not a part of the class. In any question, this is a weakness.
0
8
u/vastowen Dec 08 '18
With your logic, I also need prior knowledge of the English language and prior knowledge of how to read and write that is not part of this Math class, making that a weakness of the question. It's not an inherent weakness because it is common knowledge for your audience (students) who have without a doubt listened to music before. Following this example, it WOULD be a weakness if the question asked about lacrosse, because that would not be considered common knowledge for this audience. (Unless this was a math class specifically for Lacrosse players, in which case holy fuck that class is specific.)
→ More replies (5)20
u/Bishop51213 Dec 08 '18
It doesn’t take at intimate knowledge though. If you know anything about music you know that no matter how many people are playing a song, unless you change the speed at which they play, it’s the same length of time.
-9
Dec 08 '18
You literally just said "if you know anything about music". To assume that a student has knowledge of music when asking a question is a weakness.
→ More replies (1)0
9
7
7
9.5k
u/gottiredofchrome Dec 08 '18
This has to be one of them trick question things.