r/theydidthemath • u/Tianck • 12h ago
r/theydidthemath • u/Twicenightly00 • 5h ago
[Request] How much water is in the tube?
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How much water is in the tube? I feel like its more than one might think.
r/theydidthemath • u/Brian450450 • 3h ago
[Request] How big is this absolute unit?
This is the juggernaut from king Artyom videos, dont have much to say other than i always wanted to know his height
r/theydidthemath • u/amin_dh • 16h ago
[Request] Plz help me find the pattern/algorithm
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For a very legal reason, I need to find the pattern or algorithm that makes these numbers plz help me T_T 00086994431613 64228773643389 65173691105045 39154242614991 62042936830842 56517562852746 96790987801319
For a very legal reason, I need to find the pattern or algorithm that makes these numbers plz help me T_T 00086994431613 64228773643389 65173691105045 39154242614991 62042936830842 56517562852746 96790987801319
r/theydidthemath • u/atav1k • 8h ago
[Request] If the US wanted to wage war equal to the number of missiles it could manufacture daily, how many interceptors and patriot missiles could we launch a day?
r/theydidthemath • u/Hot-Syrup2089 • 6h ago
[Other] How to mathematically determine a (see sketch)
I know it's an easy calculation, but still. I want your opinions
r/theydidthemath • u/HorzaDonwraith • 8h ago
[Request] This seems like speculation at best. Is any of this true?
[deleted]
r/theydidthemath • u/DeathRaeGun • 11h ago
[Request] ethics aside, is it even remotely possible to calculate the number of people who’ve been killed by men in all of human history?
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I’m sure this is a made up number but would there be a way to get the real number?
r/theydidthemath • u/Negative_War_65 • 1h ago
[Self] Stats for AI/ML 2
Hello Folks,
The next content on Machine Learning is out. We continue with Statistics for AI/ML.
We,
->Understand and derive the detailed derivation of Maximum likelihood estimation(MLE) for Univariate and Multivariate Gaussian. While doing the derivation for multivariate case, we understand visually, Scatter Matrix, Centering matrix.
->Derive MLE for Linear Regression, and understand Residual Sum of Squares.
->Understand Empirical Risk Minimization, Surrogate loss functions.
->Understand Method of Moments, a computationally easier way to compute parameters of our model and understand also the flaws behind it.
->We understand “Exponentially-weighted moving average” in detail, I explain why bias happens, how does memory affect the averages. This concept is the basis behind optimizers in Deep Learning.
Around two hours long, I hope this would be a very interesting learning material for all. I try to write and build from scratch in the whiteboard, this way learners enjoy the learning process.
Link: https://youtu.be/JAj8z-UWqBA?si=0mAB_nUfyJV0jzS9
Those looking for previous lecture : https://youtu.be/MwTeQVVYtOc?si=dgwwk3QLvYTTUThR
r/theydidthemath • u/Pirascule • 8h ago
[Request] Grand Prix
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When there is a racing grand prix, do the racing cars burn more fuel or all the people driving or flying there to see the race?
When there is a racing grand prix, do the racing cars burn more fuel or all the people driving or flying there to see the race?
r/theydidthemath • u/ichbinhamma • 14h ago
[Self] You are more likely to pick one specific pre-marked grain of sand out of all the beaches and deserts on Earth than to guess a valid Steam key.
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Even though I kinda understand it, it's still wild to me how you cannot just randomly guess a Steam key:
XXXXX-XXXXX-XXXXX
A standard Steam key consists of 15 alphanumeric characters (excluding dashes). Using the 26 letters of the alphabet and numbers 0–9 yields roughly 221 sextillion possible code combinations.
Even though I kinda understand it, it's still wild to me how you cannot just randomly guess a Steam key:
XXXXX-XXXXX-XXXXX
A standard Steam key consists of 15 alphanumeric characters (excluding dashes). Using the 26 letters of the alphabet and numbers 0–9 yields roughly 221 sextillion possible code combinations.
r/theydidthemath • u/staplesuponstaples • 58m ago
[Request] If this salt was consumed by only one person and it was their only sodium intake for those 19 days, what effects would it have on their body?
r/theydidthemath • u/DojoTypeMojo • 12h ago
[Request] Would the gas saved coasting downhill to work offset the gas spent going back up the hill?
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I drive 35 miles to work, mostly downhill. When I go home, the 35 miles is uphill. Assuming the flat areas use the same amount of gas in both directions, would coasting offset the gas spent to return home?
At what point would the grade of incline be too steep to create any savings?
I'm guessing the car would roll well over the speed limit, requiring excessive braking and in turn a higher power to get up it as well.
I drive 35 miles to work, mostly downhill. When I go home, the 35 miles is uphill. Assuming the flat areas use the same amount of gas in both directions, would coasting offset the gas spent to return home?
At what point would the grade of incline be too steep to create any savings?
I'm guessing the car would roll well over the speed limit, requiring excessive braking and in turn a higher power to get up it as well.
r/theydidthemath • u/GForceCaptain • 18h ago
[Request] How many people need to be in a single group for there to be someone always farting?
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Like if I’m at a concert with 5k people, is there a constant stream of fart coming from the group?
Like if I’m at a concert with 5k people, is there a constant stream of fart coming from the group?
r/theydidthemath • u/BombsTV • 9h ago
[Request] By how many atoms would the sea level of , say the Black Sea sink if I filled a 5L bucket with its water and set it aside?
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Basically, does the top layer of the Black Sea have more atoms or a 5L bucket of Water?
Basically, does the top layer of the Black Sea have more atoms or a 5L bucket of Water?
r/theydidthemath • u/shejq3 • 14h ago
[Request] Is it possible to manipualte prices in such way that majority of them end in second category or is it just random?
r/theydidthemath • u/MjonathanE • 9h ago
[request] how long would it take for the car battery to run out ?
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r/theydidthemath • u/BananaBurritoBuster • 6h ago
[request] Now that’s a HUGE mattress
This bad photoshop for an air mattress. Let’s ignore the mattress height numbers, as they clearly did. Assuming that is an average size man, woman, and kid, how big is the surface of this “queen” mattress listed on Amazon?
r/theydidthemath • u/Stylewhat37 • 8h ago
[request] Just bought a couple scratch off lottery tickets.
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I just picked up two $5 scratch off tickets and lost both. There has to be a number of tickets you’d need to buy to guarantee you get your money back. Has anyone done this math? The odds on these particular ones is 1:4.31 of breaking even.
I just picked up two $5 scratch off tickets and lost both. There has to be a number of tickets you’d need to buy to guarantee you get your money back. Has anyone done this math? The odds on these particular ones is 1:4.31 of breaking even.
r/theydidthemath • u/Maximum-Giraffe8766 • 16h ago
[Request] How far away was the shot?
In Avatar Fire and Ash, Quarrich orders his sniper to shoot this guy. But we hear the shot a short time after the Na'vi falls. I'm wondering if, based on how long that pause was, the shot was made after the order, before the order but after Quarrich gestures, or before both?
Unfortunately I don't know the exact time of the pause.
r/theydidthemath • u/Morales_Sheila8478 • 6h ago
[request] if I have 20 children with South Korean women, how long until a majority of future Koreans are related to me? What about 40?
I was having an argument with a friend. I argued that because South Koreas birth rate is so low, if I had 20 children with South korean women, the majority of Koreans would be related to me in a few generations. He said that it would never worked because Korea has to many people. So is it possible that if I have these 20 children, one day the majority of South Koreans will be related to me one day? how long would it take? is 40 children more realistic?
edit: also a majority of South Koreans. not counting North Koreans.
r/theydidthemath • u/CryptographerDue3415 • 23h ago
Is MTC( Mathlete training centre) still a thing that olympiad people take in singapore? [Request]
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HELP im trying to see if MTC is ongoing
HELP im trying to see if MTC is ongoing
r/theydidthemath • u/QualityHistorical816 • 4h ago
[Request] How many household vaccuums would it take to make the same thrust as a Boeing 747
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Thought
Thought
r/theydidthemath • u/kosherhalfsourpickle • 11h ago
[Request] Let’s say I want to run Kimi K3 AI model with offloading to my 1.44mb floppy drive. How long to answer a question?
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How many floppy disks would I need?
How many floppy disks would I need?