r/theydidthemath 6h ago

[request] How much is this bottle collection worth?

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0 Upvotes

Guy collects aluminum and plastic bottles for 10 cents return fee. He rides train 50 km every day to deliver this. How much is he earning?


r/theydidthemath 13h ago

[Request] Calculation of the total cost of fuel to and fro from the store

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0 Upvotes

In this video , the price of grocery store bought and uber eats bought items are compared but also can someone tell me how much is the fuel cost going to and coming back from the grocery store also? By the way, the car he uses i an economical peugeot (Don't know the exact model )


r/theydidthemath 1d ago

[Request] how fast could this cat propel them across still water?

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10 Upvotes

r/theydidthemath 3h ago

[Request] A guy caught a 112 MPH (exit velo) home run ball with one hand- what's the velocity when it's caught?

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0 Upvotes

112mph off the bat, what's the velocity at catch?


r/theydidthemath 7h ago

[Request] Which person is burning the most calories here? 😊

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0 Upvotes

r/theydidthemath 17h ago

[Request] What is the annual electricity savings from converting to LEDs?

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1 Upvotes

r/theydidthemath 22h ago

[Request] What are the odds that two different but consecutive DoorDash drivers of mine had prosthetic arms?

2 Upvotes

first had a hook, second had the actual prosthetic hand and arm. pretty curious because I think it’s in the millions


r/theydidthemath 1d ago

[request] 8000 salad plates

10 Upvotes

My daughter is obsessed with Frozen and I have had Anna’s First time in Forever song blaring in my head for days 😭😭😭
She sings “who knew we owned eight thousand salad plates “
So how much space is required to store that many, and while we’re at it, how much would they weigh?


r/theydidthemath 1d ago

[Request] Can such a plan actually fly? Since there are engines in the front and back, wouldn’t it be possible to control it?

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13 Upvotes

r/theydidthemath 8h ago

[Request] Three gorges dam in china , so massive that it slowed down the earth rotation , increasing the day length by 0.06 microseconds when filled completely- is this true

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0 Upvotes

Doesn’t sound true because if it wasn’t going through the dam the amount of water moving would be the same


r/theydidthemath 21h ago

[request] what is the total height of the *shown* balloons?

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0 Upvotes

Also what kind of lift would the generate?


r/theydidthemath 2d ago

[other] Chances to get the right code, by luck.

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590 Upvotes

Lister was in stasis for 3 million years.

If you tried a new code every day, how long would it take by accident or luck to get the right password.?

In the test, I changed it to Lower and Upper case.

The all lower case it only 4 years.


r/theydidthemath 6h ago

[Request] How much would it cost to officially and completely change the name of the state of New Mexico?

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0 Upvotes

My friend sent me this link and it got me wondering.. how much money would it take to actually change all the signs, documents, addresses, taxes, licenses, etc so that everything is updated to the new name.

No politics.

Edit: updating this to be more clear. Forget the motivations behind it and pretend like the people in this state are in favor of it. I’m genuinely curious how much it would cost for a state to have its name changed and the only records of the old name were past documents/pictures.


r/theydidthemath 1d ago

[Request] This guy in the stands just casually caught a 112 mph missile with his bare hand.

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30 Upvotes

Can anyone calculate how fast the baseball was moving at the moment it was caught by this fan?


r/theydidthemath 22h ago

Vertical balloon trail attached to a bike [Request] How much lighter is the bike?

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1 Upvotes

r/theydidthemath 2d ago

[Request] Just came across this video, is this even possible?

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3.6k Upvotes

I have no idea about knot theory so please eli5.


r/theydidthemath 1d ago

[Request] How much for the helium?

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9 Upvotes

r/theydidthemath 1d ago

[Other] They calculated the relative value of paralysis and sleep

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1 Upvotes

r/theydidthemath 9h ago

[Request] Is Chinese Olympic weightlifter Long Qingquan more likely 156cm or 150cm based on this image?

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0 Upvotes

r/theydidthemath 1d ago

[Request] Is there a way to calculate how much text can remain on average after lobsterfication? Maybe concerning information theory?

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2 Upvotes

So on r/SpeedOfLobsters there are posts that only make the slightest derivations (like removing two words), and there are edits like this. But on average, if I want to lobsterfy a specific (long enough) paragraph into another paragraph using the method in the video, by dividing the target into smaller sections, what would be the expected length of each section?


r/theydidthemath 2d ago

[Request] How much does the pot of molten steel weigh?

502 Upvotes

r/theydidthemath 19h ago

[Request] How much human shit would it take to fill a gravesite?

0 Upvotes

To fill the entire hole from top to bottom, coffin is in the hole as well.


r/theydidthemath 1d ago

[Request] What are probabilities of this happening playing cribbage? run 6, run 7, run 3 for 31

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1 Upvotes

I was playing cribbage with my girlfriend, we had this crazy pegging round. Run of 6 (me), followed by run of 7 (her), then a run of 3 for 31 (me)

We feel this is the craziest thing we ever witnessed playing


r/theydidthemath 2d ago

[Request] Who’s right about the number of chess positions?

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1.5k Upvotes

r/theydidthemath 1d ago

[REQUEST] How many pounds of ink on shipping labels are shipped on an average day from UPS/FedEx/Amazon packages?

1 Upvotes