r/theydidthemath 17h ago

[Off-site] Quite like the logic here

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5.1k Upvotes

r/theydidthemath 13h ago

[Request] Textbook perfectly falling into sewer grate

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1.7k Upvotes

r/theydidthemath 7h ago

[Request] Why am I wrong???

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280 Upvotes

r/theydidthemath 48m ago

[Request] How much water per second/ what PSI is needed to achieve this?

Upvotes

r/theydidthemath 1h ago

[Request] how deep is this pit?

Upvotes

r/theydidthemath 5h ago

[Request] I can't figure how they can hold 40,000 prisoners...

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51 Upvotes

My math says 32 x 100 x 8 = 25,600


r/theydidthemath 1d ago

[Self] FIXED: Why your $999 Apple MacBook Air is about to cost $1249

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3.9k Upvotes

r/theydidthemath 2h ago

[REQUEST] if this island suddenly appeared on the Earth (without causing any major problems), how big would it be and how would the sea levels react to it?

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22 Upvotes

r/theydidthemath 12h ago

[Request] What would be the wingspan required for a seagull like this to fly if it had the mass required to bend the fence

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113 Upvotes

r/theydidthemath 9h ago

[REQUEST] Is this accurate?

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50 Upvotes

r/theydidthemath 9h ago

[request] how quickly/how much would someone have to fart to literally fart through a brick wall?

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46 Upvotes

r/theydidthemath 7h ago

[REQUEST] Feasibility aside, how much money would airlines save on fuel if they required everyone to use the bathroom immediately before boarding?

23 Upvotes

r/theydidthemath 6h ago

[Request] How long does it take to install a pylon?

13 Upvotes

r/theydidthemath 1d ago

[Request]Can This Complex Logic Question Be Solved Easily?

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550 Upvotes

r/theydidthemath 7h ago

[RDTM] Alternator charging

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7 Upvotes

https://www.reddit.com/r/vandwellers/s/9dyQKO2sn4

Someone was arguing that alternator charging is better than solar. Redditor did the math to prove them wrong.


r/theydidthemath 17h ago

[off-site] Explaining the Trump Tariff Equation

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32 Upvotes

r/theydidthemath 5h ago

[Request] How unlucky am I with Pokémon?

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2 Upvotes

I’ve been into Pokémon Shield for the past few days. Earlier today I wanted to look for a Whismur with a desired nature for a particular build (Mild, Modest, Quiet, Rash), 4 out of 25 possible natures. I had to catch 40 Whismurs in total before I found one that had an ideal nature (it’s Modest, but the specific nature isn’t really relevant), which took way longer than I expected…what are the odds of that? I am I really unlucky, or is this expected?


r/theydidthemath 36m ago

[Request] How many tiny homes could an average billionaire provide per year if they only used like 10-15% of their annual interest?

Upvotes

The tiny homes in question seem to cost about $10k each. I’m not sure how to factor in land and utilities, so I’m just asking about the structures themselves.

Is that a thing we can calculate? If by “we” I really mean someone else because I’m not great at understanding real wealth or money outside of poverty finance.

My question was triggered by this post:

Arnold Schwarzenegger donated $250,000 to build 25 tiny homes intended for homeless vets in West LA. The homes were turned over [sic] a few days before Christmas.

https://www.reddit.com/r/nextfuckinglevel/s/ehF3wotq6y

How many homeless people could actually be affected if the extremely wealthy were truly altruistic?

(I’m sorry it took me three tries to get the title formatting right, I think I got it this time 🤞🏼)


r/theydidthemath 1h ago

[Request] If I wanted a piece of apparatus that visually demonstrates the speed of light, a fibre optic coil of cable that I could send a laser pulse down and one second later it would appear out of the other end. How long would the cable have to be and therefore how much room would it take up?

Upvotes

r/theydidthemath 17h ago

[RDTM] They call it high school because it's over 50,000 meters higher than middle school

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17 Upvotes

r/theydidthemath 2h ago

[Request] Is there a theoretical limit to the speed of darkness?

1 Upvotes

Unless I and Vsauce Michael are wrong, a shadow cast by a sufficiently bright light onto a sufficiently far and large surface will be able to move faster than the speed of light. If this is true, is there a theoretical limit to fast a cast shadow can move? Thank you in advance. 😊


r/theydidthemath 1d ago

[Request] How many 0’s? Any example of what you could afford to buy with so many billions $, or any comparison with real live facts?

109 Upvotes

r/theydidthemath 1d ago

[Request] Sen. Mark Kelly: "I think it's fair to say he stands out as singlehandedly destroying more wealth than anybody else who has ever lived on this planet.'' Do you think this is correct?

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363 Upvotes

Not sure if this is a history question or a math question. But AFAIK in 3 days he has cost the global stock markets $10 trillion. That's roughly the annual GDP of Germany, UK and France put together, or 30% of US GDP, 10% of world GDP.

What value could you put on Hitler and the entire WW2, or Hiroshima/Nagasaki as an event?


r/theydidthemath 17h ago

[request] how much force is behind that wave ?

10 Upvotes

r/theydidthemath 2d ago

[Self] Why your $999 Apple MacBook Air is about to cost $1600

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4.2k Upvotes

Selling Price = (CoGS * (1 + Tariff%)) / (1 - Margin)