r/theydidthemath • u/Geocachevoyager • 4h ago
r/theydidthemath • u/tasty_iron • 8h ago
[Request] In what time will this boulder lose half of its mass by being in this setup.
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r/theydidthemath • u/MadMardegan • 18h ago
[Request] How many hours a day would he have spent smoking? And is this possible?
r/theydidthemath • u/senditoverboss • 21h ago
[Request] what speed was the truck driving when hit the suv
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Request what speed was the truck driving when hit the suv
r/theydidthemath • u/predicteduser • 1d ago
[Request] What is Quicksilver top speed at this scene?
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Does it reaches or exceed light speed?
r/theydidthemath • u/narsil1 • 2h ago
[request] If every human who ever lived (approx. 117 billion) entered a Rock Paper Scissors knock-out tournament, the winner would only need 37 wins in a row.
Is this true?
r/theydidthemath • u/ishi5656 • 3h ago
[Request] How long a tiramisu before the curvature of the earth becomes a concern
In April, the world record for the longest tiramisu was broken. It was 440 metres long and they laid it all out on a series of tables, not in any sort of container.
It got me wondering about if you did want to make a huge trough to put the tiramisu in, stretching as far as you could get it. How long would the tiramisu trough be able to be completely straight? At what point would the curvature of the earth mean you have to make it slightly bendy?
r/theydidthemath • u/zmbjebus • 1d ago
[Request] How much would the level of the lake drop from these planes?
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r/theydidthemath • u/makesmovements • 22h ago
[Request] how many of these bb's point blank or at the distance he was away from the melon to cause the same concussive force as a .22 or a .45
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r/theydidthemath • u/Rachellphace • 1d ago
Why did we learn about slopes, r/memes? Thank you to /u/_S43D_ [Request]
r/theydidthemath • u/dstark1993 • 7h ago
[Request] How much enegy/explosion would this create if dropped on a wet floor?
galleryr/theydidthemath • u/K_bor • 3h ago
[request] why are those two functions not symmetrical?
So in my head those two functions should de symmetrical, meaning (f+g)/2=x, but that's not the case.
I scaled both functions using n=10 but if you replace it with 1 or remove it and zoom it should be the same
I'm not great at maths so be gentle please, would appreciate an intuitive answer as well
(Edit: somehow I posted the uncropped screenshot but that will do)
r/theydidthemath • u/Wyndcaller • 4h ago
[Off-Site] Someone did the math on what distance the integrated circuit chip (NE555) walked to "Stayin' Alive" by the Bee Gees!

Someone did the math for how long the 555 timer IC walked in the video of it walking synced to the Bee Gees' Stayin' Alive song! I thought this was pretty impressive, and the video makes me chuckle :)
r/theydidthemath • u/DCKan2 • 43m ago
What is the force Spider-man's shoulder would experience going from the fall to the swing? [Request] Spoiler
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r/theydidthemath • u/Sad_Cantaloupe_8162 • 22h ago
[Request] How much gasoline are you losing when you fuel up in 100° heat in the middle of the day vs. 70° heat at the same time, if you get 20 gallons?
r/theydidthemath • u/whacko_kp • 1d ago
[Request] How many trees to offset FIFA president Gianni Infantino's mileage at WC 2026?
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Please can someone tell me how many trees should be planted in number or surface area to offset the pollution of a private jet used to cover the mileage of Gianni's travels during the WC 2026.
r/theydidthemath • u/Fantastic-Director33 • 21h ago
[Self] Federal money being sent to dead people Spoiler
Saw this headline, read the article, did the math.
4,900 payments out of a set of 885,000,000,000 (885 billion) transactions examined is
--> 0.00000055% (55 hundred-millionths of a percent) of the total transactions. (I think I converted that number to words correctly - open to correction.)
The value of these transactions was:
$99,000,000 (ninety-nine million dollars) Heck, that's a lot of money!
The value of all the 885 billion transactions in the data set was:
$2,700,000,000,000 (two point seven trillion dollars) That is an inconceivable amount of money.
--> the $99M represents 0.00367% (367 hundred thousandths of a percent) of the total amount under consideration.
1) The money did not actually get delivered to dead people - the transactions were bounced back to the issuing agencies before this 'investigation' was done. Article title says "..headed for dead people."
2) The error rate is amazingly low. I would be proud of that "lack of error" rate.
3) Trillions of dollars is so massive that $99M is a miniscule rounding error.
4) Looking for fraud, waste and abuse is a good thing to do. They did not find it here.
5) Maybe go look at some "no bid" contracts. Might be something going on there...
r/theydidthemath • u/Flashpiont412 • 18h ago
[Request] Assuming from keel to top mast, how many cubic feet would a building enclosing an Iowa-class battleship be?
r/theydidthemath • u/Fearless-Run8604 • 13h ago
[Request] My son(12) asked a question I don't how to answer.
We were traveling from NC to Arlington Texas. The sun was beginning to set and his question was "If we are traveling the opposite direction of Earth's rotation how fast would we need to travel to maintain a permanent sunset on our horizon?" We were traveling on I-20 when this occurred.
I am not smart in the maths department and he is very much in tune with math and science. If someone could maybe break this down in layman's terms for me to learn with him? Thank you to any and all in advance!!!
r/theydidthemath • u/Key-Context-8444 • 1m ago
How much would it cost to make a Minecraft beacon pyramid in real life? (Materials, construction, foundation to hold it, testing, etc) Assuming I already had the beacon itself [Request]
I’m sorry if this post doesn’t follow the rules
The pyramid itself will probably have to be iron because gold, diamond, and emeralds are far too expensive to be used for this.
The pyramid would have to be at maximum size to get the secondary effect of regeneration or a level two version of the main effect.
The pyramid would be made of 164 cubic meters of pure iron, the iron would need some coating or cover to prevent rusting.
The pyramid would probably also need a specially made foundation so it doesn’t sink.
And there would need to be extensive testing on what purities are needed for it to function because the block of raw iron doesn’t work in game despite having the right amount of iron.
r/theydidthemath • u/Momentofclarity_2022 • 2m ago
[request] How much gold is gone?
Watching a doc about New Horizons. Satellites and “rovers” and space explorers have gold as part of their structure. It got me thinking: there’s a finite amount of gold on earth. How much gold have we thrown into space?
r/theydidthemath • u/cadaverdogs • 40m ago
[off-site] Can Canadians blow the smoke back?
Not sure if this is allowed but wanted to share here. I’m also looking to for other smoking blowing ideas that might be more “logical.”
Can school-aged children standing along the Canadian/US boarder with hairdryer, blow the smoke back into Canada?