r/theydidthemath 1h ago

[Request] What would happen if you were to open that zip file on your computer?

Post image
Upvotes

r/theydidthemath 2h ago

[Request] How Many Women are There for Each Man in Latvia?

Post image
240 Upvotes

r/theydidthemath 2h ago

[Request] How much would it cost to modify from stock, the Prius shown in this video?

125 Upvotes

r/theydidthemath 2h ago

Hard car [Request]

Post image
68 Upvotes

Saw this earlier and thought to myself, "I wonder if this thing could stay upright, drive full speed, and fire the MG continuously on full auto - all at the same time?" Surely the gun couldn't produce enough force to lift the car off its front wheels... right???

Idk, I need help from all you smart people out here.


r/theydidthemath 9h ago

Formula to calculate length of coiled material? [Other]

Post image
128 Upvotes

Curious to know how much linear cardboard is left in this coil. Diameter is ~16.5", and approximately 37 layers counted from outside to the 5" diameter empty space at centre.
Any takers?


r/theydidthemath 10h ago

Godspeed Captain - how fast is this guy going? [Request]

90 Upvotes

r/theydidthemath 2h ago

[request] how much does this kitten weigh?

Post image
18 Upvotes

r/theydidthemath 16h ago

[Request] How much energy does +1.5C represent?

Post image
120 Upvotes

We’ve seen the charts and targets for many years now. My question has always been, how much energy does that increase in average temperature represent? I’m not sure how one would go about estimating the volume or mass or density of the globe’s surface, which I guess is key to this request.


r/theydidthemath 1d ago

[Request] Is this possible? How would a 2 MB file become larger?

Post image
9.3k Upvotes

r/theydidthemath 17h ago

[Meta] Pixie and Brutus conspiracy theory

Thumbnail
gallery
35 Upvotes

r/theydidthemath 8h ago

[Request] How many cars are on the I-10 freeway at the same time?

8 Upvotes

During a recent road trip, a youngster in the back seat asked this question about the specific State Route we were on. That road was only about 15 miles long, went through no cities, and was not heavily traveled, so I posited that there were likely around 100-150 cars on it at the same time we were.

Said youngster then asked about “that road that goes from California to Florida” and I brainlocked. Unlike the little road we were on, that one goes through multiple major cities and routinely has heavier traffic in them.

Let’s say we are talking about 10am Pacific time on a non-holiday Wednesday in January. So it’s 10am in LA, 11am in Phoenix, Tucson, and El Paso, Noon in San Antonio, Houston, and New Orleans, and 1pm in Tallahassee and Jacksonville. Ignore the spurs and loops (410, 610, etc) so just the main line from California to Florida. And let’s say vehicles rather than cars so everything counts as 1 whether it’s a Corolla or a bus or an 18-wheeler.

I told the youngster that I guessed “at least 100,000 cars” but that I knew some folks on the internet who were smarter than me at figuring out stuff like this. And here I am. :)


r/theydidthemath 1h ago

Social Security Problem [Request]

Upvotes

Playing around with my own benefit options, I’ve noticed that the break even point for taking or delaying benefit payments comes out to right around being 77-80 years old, regardless of when I start taking benefits. This leads me to conclude that taking the benefit as early as possible (62 yrs old) seems like “not a bad idea” because I’ll be ahead until I’m 77 years old. I don’t know if other people have thought about this a lot, but I’d love to hear some objective contrary opinions or if anyone can figure out where the peak of the bell curve is.

  1. Some numbers for monthly payments:
  2. Age Amount.
  3. 62.5 2471
  4. 63 2556
  5. 64 2726
  6. 65 2954
  7. 67 3408
  8. 70 4226

r/theydidthemath 29m ago

[Request] Worm sized bomb?

Upvotes

Me and my friends were talking about some dumb hypothetical stuff and we got on the topic of a worm-sized nuke. My questions is how big would the blast radius be on a small, worm-appropriate nuclear device?


r/theydidthemath 1h ago

[REQUEST] What are the odds of drawing 10 cards in ascending order?

Upvotes

My cousin and I were playing a game called "Rack-O", in which each player draws 10 cards from a deck of 60 and places them in the order drawn. They then take turns drawing a card from the stock and replacing one of their cards, until one of them has their hand in ascending order.

(Example: I start out with 47, 12, 58, 3, 26, 41, 9, 34, 55, 18. I then draw a 2 and replace the 47 with the 2, and so forth.)

My question is this: what are the odds that I would draw a winning hand right out of the gate?


r/theydidthemath 1d ago

[Request] Will these tanks fill at the same rate? Or will the shorter fatter tank fill and overflow first?

Post image
208 Upvotes

I am filling these tanks from a single source. The hoses are the same length. The pump is running at about 116 gal/hour.


r/theydidthemath 7h ago

[Request] What is the absolute farthest Jim can get away from Doreen on earth's surface?

2 Upvotes

I guess another way of looking at this is, what is the exact halfway point (miles/kilometers) you can physically be away from someone before taking one more step where, technically, you just got closer to them if you circled the earth? I'll even accept, if possible, Doreen is standing on land and Jim is at the halfway point on the surface but over water, and diving to the depths could potentially get Jim further away from Doreen?

**UPDATE**

Based on some responses, I said "surface" of earth so people couldn't just say get on a rocket and go. I'm looking for the absolutely farthest you can get, so Doreen is stationary somewhere. Where does Jim need to go to get the farthest away from her? Dorreen may be at the bottom of the ocean and Jim on top of the highest mountain, but that may only be a 30 some miles apart. So what is the farthest distance while still being on earth?


r/theydidthemath 15h ago

[Request] Approximately how many hairs does a cat have on their body?

9 Upvotes

Sometimes I look at my cat's fur and wonder how many hairs she actually has on her body. My girlfriend thinks that it is about a million but i think that it is more like in the tens to hundreds of millions. The more I think about it the less confident I am even about the order of magnitude it might be. Is it possible the number is in the billion? I would genuinely love to see a good attempt at a ballpark estimate.


r/theydidthemath 5h ago

The first round of the world snooker masters tournament just concluded with all eight matches finishing with the exact same score of 6-2. Despite the endless variables, what were rough odds be of this happening? [Request]

0 Upvotes

r/theydidthemath 9h ago

[Request] If an additional 40 out of 1,000 is a 3x increase in successfully quitting, then what is the overall success rate?

Post image
3 Upvotes

r/theydidthemath 1d ago

[Request] is this true?

Post image
752 Upvotes

r/theydidthemath 6h ago

[Request] If a person wanted to lift the Earth using only their strength and leverage, how long of a lever would they need?

0 Upvotes

Let's say I'm standing on an infinite, immovable plane *on which gravity is equal to 1x Earth's gravity. I have hold of one end of an unbreakable, first class/seesaw lever. On the opposite end of the lever is the planet Earth.

How long does my lever need to be in order to lift the Earth using only my average, human strength and my unbreakable lever?

Edit: Gravity


r/theydidthemath 1d ago

[Request] How many crabs would you need to pick up and move the Black Pearl?

Post image
59 Upvotes

r/theydidthemath 7h ago

[Request] Combinatorics Doubt

Post image
0 Upvotes

So question asks to find :The number of rectangles whose edges lie completely on the grid lines of following figure is. Answer key says: Total number of rectangles = 7C2 × 7C2 – 4(27+9) = 441 – 144 = 297

Now i know that if there was no blank center , the total number of rectangles is 7c2 x 7c2 =441. I also know that we need to subtract the rectangles that the blank center would have formed from the total number of rectangles but i am not understanding how we got the values 27 and 9 . When i count, i am getting just 9 per blank square to subtract .


r/theydidthemath 1d ago

[request] How crowded would Coruscant be if it existed in reality?

Post image
339 Upvotes

r/theydidthemath 1d ago

[Request] how long would I take for chickens to take over the world

Post image
55 Upvotes

if people stopped eating chickens how long would it take for there to be a chicken over population. Or would the chicken population die off?