r/theydidthemath 11h ago

[Request] How many people would fit on the plane if it was actually this size?

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563 Upvotes

Just curious!


r/theydidthemath 5h ago

[Request] How much would leaving an electrical stove on overnight cost?

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117 Upvotes

r/theydidthemath 21h ago

[Request] How powerful would the thrusters need to be to move the earth to "launch" the rocket into orbit? What would happen to the planet and it's orbit?

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1.2k Upvotes

From XKCD 3291


r/theydidthemath 1d ago

[Self] How feasible is it to use 61 USB-C ports to charge an EV?

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2.8k Upvotes

r/theydidthemath 1d ago

[Request] How big would the glass need to be to comfortably and completely sustain a Human? From oxygen, food, water and so on.

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1.2k Upvotes

r/theydidthemath 13h ago

[Request] How Much Force Does a Person Experience When Catching a Falling Durian?

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81 Upvotes

r/theydidthemath 1d ago

[request] bad math: where did the days/hours go?

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4.1k Upvotes

This makes no sense. Can someone explain where the hours/day go?


r/theydidthemath 17h ago

[Request] How many grapes would fit in a horse, volume-wise?

98 Upvotes

My wife and I are having a multi-year debate. She keeps claiming that a “large and impressive” horse is roughly the same volume as 60,000 grapes. i disagree and believe that’s far too many grapes to make up a standard horse, even a big one. But we have no idea how to calculate the relative volumes… please help!

Edit: thank you all, I’ll graciously accept defeat in this battle


r/theydidthemath 21h ago

[Request] How hard would a batter need to hit a ball to do this?

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62 Upvotes

r/theydidthemath 9m ago

[Request] What are the odds of the World Series, Super Bowl, and WCF being all LA teams in the same year? (say 2027)

Upvotes

With Arte Moreno finally selling the Angels, it made me wonder: What are the odds the Dodgers play the Angels in the World Series, the Rams play the chargers in the Super Bowl, and the Lakers play the Clippers in the Western Conference finals in the same year? (I don't watch NHL so I don't really know the LA teams) Assuming the current standings of the teams in their respective leagues, how likely is this all LA sports year?


r/theydidthemath 1h ago

[Request] The movie "The Martian" was cost-prohibitive

Upvotes

I can't imagine the cost to "return to Mars to save just one man." Has anyone already done the math? The movie is from 2015. I also wonder what the actual mathematical odds are that they'd even find him, retrieve him, and return him to Earth. Wait - aren't all odds mathematical?


r/theydidthemath 1h ago

[Request] How far away would the sun have to be from the sun for a single molecule to block a person's view of it?

Upvotes

Assuming human eyesight did not have a distance limit. How far away would one molecule have to be away from the sun for it to block your view of the sun. Assuming the molecule is 3 feet away from the humans eye and both the sun and the molecule are in a straight line.


r/theydidthemath 2h ago

[Self] Congress is much older than the U.S. Population

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2 Upvotes

r/theydidthemath 1d ago

[Request] Is there a combination of 6 fixed positive integers (n from {25,50,75,100} and 6-n from {1,..10}) which when combined with +,-,/,* operations could generate all the numbers from 1-999 as in Countdown?

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195 Upvotes

r/theydidthemath 4h ago

[Request] When does the interest pay for a day?

1 Upvotes

Monzo has a 'save 1p a day' challenge, so on day 1 you save 1p, day 2 you save 2p and so on. It restarts at 1p each year.

The interest is 3.6%AER paid monthly.

How long would you need to save before you got a single monthly interest payment that would pay for a single day, before the daily amount was taken.

For example, you got paid £1.61p before day 161 of the year.


r/theydidthemath 4h ago

[Request] Randall munroe esque question : How destructive would a pistol shrimp snap be if it had the same temperature as the sun's core

0 Upvotes

I'm talking cubic meters of water evaporated and other risks if thats even possible, if thats not the proper subreddit i would love for one of you to redirect me to the correct one

From all i know, a pistol shrimp snap is around 5k°c at its highest and sun is 15million at its core


r/theydidthemath 5h ago

[Request] [Self] Free party using electric car's battery

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0 Upvotes

Hi guys I was told to post on this sub

I have an idea of using my parent's electric car (KIA EV6) as a battery for powering 2x QSC K12 MK1 (1000W each) + 1 Pioneer DDJ SX1 (see specs on 2nd pic) + 1 laptop (has own battery) to throw a free party

Would this be possible electricity wise ?

Car battery is 58kWh

1st pic : K12's specs

2nd pic : Pioneer DDJ Sx specs
3rd pic : What the car can handle, what's written next to the plug

Thanks


r/theydidthemath 5h ago

[Request] How much force is he exerting to stop the mountain?

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0 Upvotes

I saw that Tagah used airbending to stop this mountain falling with one hand by blasting at the bottom which seems very inefficient. This must be millions of kilo's of force right?


r/theydidthemath 7h ago

[Request] Best pack ever?

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0 Upvotes

Whats the chance of this pull? (Hearthstone) its 4 legendaries and one is signature. I think its 1% chance a card is legendary, but i think its a binomial probability for more legendaries per card idk. And i think a signature legendary is a 1 in 181 packs..

Can someone help me with this :D


r/theydidthemath 59m ago

[Request] if all wealth in the USA was distributed equally, how much would each person get?

Upvotes

I've seen average income being quoted as $60ish thousand, but I know that income from stocks and capital are seperate from 'earned' income. If all the money that everyone in the USA earned from any source was put together and shared out equally how much would someone get? I'd also be curious about other forms of wealth such as property, but I expect that would get complicated?


r/theydidthemath 15h ago

[Request] Star Trek Replicator

2 Upvotes

Was watching Star Trek and got to wondering assuming the replicator arranged atoms to create a plate of spaghetti. Which would have a more complex job of these 2 replicators to make #1 assembling a plate of spaghetti at the atomic level #2 assembling an oxygen atom out of sub atomic particles? Thanks if anyone gets my weird idea enough to do the math.


r/theydidthemath 1d ago

[Request] How fast would the earth have to be spinning to counteract gravity at surface level and what effect would that have?

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31 Upvotes

r/theydidthemath 2d ago

[Request] If earth were the size of a grain of sand, how big would the observable universe be?

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2.6k Upvotes

r/theydidthemath 1d ago

[Request] How much popcorn would it take to crush a human body, and how fast would popcorn have to be traveling to kill someone? (either by passing through them or blunt force trauma)

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357 Upvotes

r/theydidthemath 1d ago

[Request] which pendulum reaches the other side first. Considering distance are proportional.

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153 Upvotes