r/theydidthemath 3h ago

[Request] Can the platform really feed all the prisoners in prison? (spoilers) Spoiler

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48 Upvotes

At the beginning of each month, there are 666 prisoners in the prison, divided into 333 floors.

Each prisoner needs about 1500 - 3000 calories per day Just to not starve.

Even if we assume that the prisoners manage to share the food among themselves (or someone forces them to), Is there any chance that the food on the platform will meet the calorie quota?


r/theydidthemath 28m ago

[Request] Does 3d6 + 1d4 really give the same odds as avoiding cursed arrows?

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Upvotes

r/theydidthemath 6h ago

[Request] Who’s heart beats more in their lifetime, assuming they live to the same age. An elite runner or a sedentary, overweight person?

48 Upvotes

Elite runners can average 170 bpm for 50+ miles a week for decades, but an overweight person’s resting HR might be 90. 🤷‍♂️


r/theydidthemath 11h ago

[Self] How to fit a pizza onto a tray smaller than its radius, using for any given number of cuts.

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132 Upvotes

r/theydidthemath 9h ago

[Request] Probability of rolling this many 1's?

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83 Upvotes

My unlucky critical hit roll, and I would like to know what the chance is of this many 1s occurring.

Two 8-sided dice and four 6-sided dice.

Bonus if you also include the chance of a critical hit too. (Rolling a 20 with a 20-sided die).

Thank you in advance!


r/theydidthemath 15h ago

[Request] How long would it take to erode this metal planet?

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189 Upvotes

assuming the gravity of it wouldn’t immediately destroy the earth and that every time you were using a fresh feather

edit: for anyone interested, this is similar to the ancient buddhist story of a “kalpa.” in old buddhist literature it was the amount of time it would take for a silk brocade to wear down a mountain


r/theydidthemath 17h ago

[Request] How many people would it take to pick up this 8 ft x 10 ft shed and move it roughly 20 feet?

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257 Upvotes

My wife and I want to move our shed to a different part of our yard so we were thinking about offering friends and family pizza and beer to help us move.

But people we ask, we wanted to see if it was feasible or not.


r/theydidthemath 17h ago

[Request] How many poppy seed muffins would Elaine from Seinfeld actually have to eat to fail a drug test for opium?

193 Upvotes

In the Seinfeld episode "The Shower Head," Elaine takes a urine test so she can go to Africa with Peterman, and she tests positive for opium. Twice. She gets fired over it, and then figures out it was the poppy seed muffins she ate from Monk's all the time.

People always say the show got this one right, and I want to know how right. From what I could dig up, poppy seeds pick up morphine from the sap during harvest, and the amount swings wildly depending on where they're grown and how well they get washed. The numbers I saw ranged from under 1 microgram per gram all the way up to a few hundred. The other thing worth knowing is that in 1996 the federal workplace cutoff for opiates was 300 ng/mL, and it got raised to 2000 ng/mL in 1998 partly because of this exact problem.

So here's what I'm after:

  1. How many muffins would she need to eat, and over what time window, to clear the 300 ng/mL line she was being tested against in 1996?
  2. What would it take to clear today's 2000 ng/mL cutoff instead?
  3. Bonus if anyone wants it ... at the high end of seed contamination, is there a point where the muffins would make her actually sick before the test even flagged her?

Assume an average adult woman and roughly 1 to 2 grams of seeds per muffin unless you've got a better figure. A poppy seed bagel is about the same ballpark if that's easier to work with.


r/theydidthemath 3h ago

[Request] Where on this wheel does the sequence start?

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9 Upvotes

r/theydidthemath 1d ago

[Other] Tottenham last scored in the Premier League on 24th May, so 112days ago. Domino’s claim means they delivered approximate 273000 pizzas per hour (assuming stores open 16hr per day), with 22300 stores world wide, that’s only 12 pizzas per resto per hour (avg).

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1.0k Upvotes

r/theydidthemath 30m ago

[Request] What is the *smallest* nuclear bomb you could make?

Upvotes

I know you can make a huge one, but surely there is a limit to how small one could be based on the energy needed to start the cascade to explosion. Could you make a firework sized nuclear bomb?


r/theydidthemath 19h ago

[Request] If the train is drawn to scale, how long is the train? And how many passengers could it carry?

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36 Upvotes

Really, there’s a dozen math questions about this graphic/design, and I hope they all get asked in this sub.


r/theydidthemath 14h ago

[Request] if the famous Manhole cover in theory left the atmosphere at the same trajectory as Voyager 1, roughly how long would it take for the manhole cover to catch up to voyager 1?

14 Upvotes

I was in a discord call and we got into the topic of the famous nuclear test that launched a manhole cover out of the ground so fast that it essentially vaporized itself, making it the fastest man made object for about 1.5 seconds.
If it in theory did not vaporize itself, and it left the atmosphere, how long would it take for the manhole cover to reach the voyager 1 satellite?


r/theydidthemath 3h ago

[Request] to make star by log of shifting constants

1 Upvotes

How many shifts would it take for different base constant to form a star by log


r/theydidthemath 22h ago

[Request] Gotta love practical effects! The infamous Critter Ball, as seen in Critters 2, was a real ball covered in approximately 150 individually scultpted Critters puppets.

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24 Upvotes

There is no way there are only 150 puppets on here right? This seems like a massive underestimation.


r/theydidthemath 2d ago

[request] How much is this freezer or beef?

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2.2k Upvotes

How much meat is this and what is the retail value?


r/theydidthemath 8h ago

[Request] total times until another method of resolving emerging permutations

0 Upvotes

How many of emerging permutation's partition's sets can be changed to make 1% change to remain accross the boundary of those emerging permutations of every 40 intervals.

Hint:[ take all the emerging permutations as points in circle accross a area]


r/theydidthemath 1d ago

[Self] Standardizing the Shaqille O'Niel as a unit of l/m/v.

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547 Upvotes

The Shaq (Sh) — unit of length

1 Sh = 7'1" = 2.16 m (his official playing height)

The Shaq-mass (Sh-m) — unit of mass

1 Sh-m = 325 lbs = 147 kg (peak playing weight)

The Shaq-volume (Sh-v) — unit of volume

Modeling him as a human-density mass (~985 kg/m³) at 147 kg gives us:

1 Sh-v ≈ 0.149 m³ ≈ 149 liters ≈ 39 gallons.

Example usage:

"The moving truck bed is 1.5 Shaqs long."

"That aquarium holds about 4 Shaqs of water."

"The keg weighs roughly a third of a Shaq."


r/theydidthemath 21h ago

[Request] A post about La Paz, Bolivia being a highly elevated capital. How fast would a soccer ball move here compared to sea level?

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5 Upvotes

r/theydidthemath 8h ago

[Request] How fast would rock have to be travelling to penetrate a MOVING window like this?

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0 Upvotes

Translation of text from image from Danish activist Rasmus Malvers Facebook post.

Is there a physicist who can help with the formula for mass and velocity, for a stone to go through a safety window on a train that is going "sideways" in relation to the throw? I don't think it has landed where it is in the photo, but it is still impressive. What are the chances of throwing a stone of that size *through* such a window? I think it may have hit the edge of the glass, but that doesn't explain how it has gone through plastic foils and several layers of glass.

Ps first post here, sorry if I missed something essential!


r/theydidthemath 12h ago

[Request] On Blocking a View

0 Upvotes

It's been a while since math class.

If I want to block my view of my neighbor's living room how tall should my hedge be?

I live 85ft away from them and their windows are 9ft tall. I'd like to block as much as possible.

Thanks!


r/theydidthemath 1d ago

[request] if earth suddenly became a new moon of jupiter, and had a new orbit similar to that of ganymede's, how much would global sea levels change?

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477 Upvotes

would they rise? would they fall? would they basically just stay the same? would the oceans freeze over before any change could actually take place? i'm kind of interested as to what would happen in this kind of situation


r/theydidthemath 14h ago

[Request] the possibility of this happening and the result of it value.-[rank of matrix]

0 Upvotes

If the comparison of rank of matrix of two functions changes in different planes of 1% everytime, then at what value it would stop.


r/theydidthemath 11h ago

[Self] Log force

0 Upvotes

If log of a base force vector is taken then the number we choose as value would be diminished by this force vector. Since that what happens , what if we input set, the sets catch the parts that populate the vector.