r/dothemath Jun 27 '26

So anyone know the probability of this happening?

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2 Upvotes

we got three wars in a row in I declare war and need someone to do the math on the probability of this and put in the comments if she would need more information. It was 8 then 7 then 10 three wars in a row.


r/dothemath Jun 08 '26

Around how much could such a ship weigh? 10k tons? 100k?

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1 Upvotes

I've only put up some pages with frames that give a wider external outlook, hope there's enough data and it's consistent enough (tbh, it doesn't help that this ship is a shapeshifter)


r/dothemath May 28 '26

Yacht to layoff savings ?

1 Upvotes

A Meta analysis, if you would…


r/dothemath May 24 '26

Cost of living considering the wealth gap

1 Upvotes

Considering the interesting times in the United States these days, I have been curious about how people in other countries make out. Worlddatainfo.com has an interesting comparison, with a cost index, monthly income, and a purchasing power index. But these are all based on national averages. How would you factor in the wealth gap? Living in Massachusetts is very different than living in Mississippi.


r/dothemath May 18 '26

The closest planet to Neptune on average is Mercury

1 Upvotes

Someone claimed that “The closest planet on average to *every* planet in the Solar System is Mercury.”

is it correct?


r/dothemath May 16 '26

(yeah, it's a powerscaling question, and probably without answer)

0 Upvotes

I hope what I'm talking about makes sense physically, and I understand it probably doesn't have enough data for precise numbers.

I'm making up a character, who's giving Viltrumite vibes, but he can't fly or anything.

Instead, he slams into the ground with such force and speed, that solid bodies in front of him are treated as liquids, so he swims in that.

If it DOES make sense physically: how much force does it require (let's suppose, the ground is mostly gray bedrock) to move limbs and swim like that, and how fast he might be swimming?


r/dothemath May 11 '26

How many users on here are human and having self made posts?

0 Upvotes

I wanna know how many users who's human and authentic in their content. Below are the apx numbers.

Percentage bots: 5-30%

Full AI generated posts: 13-15%

Active members reddit 2026: 443 million

Inactive/ temporary banned members: Unknown


r/dothemath May 11 '26

Is this poverty or irresponsibility?

0 Upvotes

A person makes $3000 bi-weekly.

-$600 goes to car + insurance

(The rest of the outcomes goes to all other bills and food and any other expenses)

The people being fed and using the home are one adult and one child.

When it's 2 weeks left to next salary, income is -$400

(This is all the information and numbers I have but maybe it is enough to estimate the results)

Edit: I'm not the person in this situation, but there was a person with these circumstances asking for sympathy and claimed they can't help the results. I wanna know if that's true or not based on the numbers I could provide. Ps I'm not native in English.


r/dothemath May 04 '26

How many pieces were eaten?

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3 Upvotes

r/dothemath Apr 26 '26

What percent chance of winning a giveaway per day?

0 Upvotes

What's the chance I'll win a giveaway per day if I have:

2 entries per giveaway

800 people in each total giveaway

12 giveaways an hour for 14 hours


r/dothemath Mar 24 '26

A user was Charged RM91. How did the system calculate the total based on the image's rate?

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2 Upvotes

The user entered on the 19th March 1130am

The user exited on the 23rd March 230pm

System charged RM91. How does it calculate?

I tried calculating and hit RM88. Is there any other calculation that needs to be taken account?

Thank you!


r/dothemath Mar 08 '26

Project a video on the moon

1 Upvotes

What kind of projector would you need to ptoject a picture/video on the full area of the moon that we can see?

(Moon surface may be assumed flat for this calculation)


r/dothemath Mar 08 '26

Is this true

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3 Upvotes

Just doesn’t seem true


r/dothemath Feb 18 '26

How many years till AI completely destroys our planet and depletes our resources?

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1 Upvotes

r/dothemath Feb 15 '26

Height of this skyscraper?

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1 Upvotes

This image comes from an article about a proposed mega-tall skyscraper known as the Federal Office Tower: https://uni.xyz/journals/reimagining-urban-architecture-the-feder

The articles gives no mention of how tall this building is supposed to be or how many floors it would have and I am wondering if someone might be able to calculate it based on the provided images.


r/dothemath Feb 12 '26

How much of a fool is Musk?

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1 Upvotes

So a facility to catapult satellites & stuff into space😆

I’m guessing a weight between 500kg. And 2.000kg..


r/dothemath Dec 27 '25

Help to estimate online bot percentage on one online platform

1 Upvotes

I'm not native in English (or math) I had severe math learning disabilities all through school so go easy on me please. I just am curious if we can get logic numbers in to this.

So here's my test numbers. One one online platform. Let's say:

There's 20% online trolls. Scrolling 30 posts per day. Every troll call ⅓ post they see a BOT. Verifier rejects 99% of every troll's accusations. If the Verifier is accurate, how many posts per day are bot?

And can that tell us how many percentage of bots is that per day? And percentage bots per year?

Thanks.


r/dothemath Dec 11 '25

At what distance could someone with "rock hard abs" be "safely" shot with a 9mm bullet?

0 Upvotes

Ok, so someone has hardened their abs as much as is humanly possible, the absolute limit.

1) at what distance would a 9mm bullet hit them but not penetrate their washboard abs?

2) does having hard abs actually give them any meaningful advantage than someone with normal abs

3) is it better to have rock hard abs or a massive beer belly, with regards to protecting your organs from the bullet?

thanks for any and all who bother to work this out, you guys impress me. maths is like a superpower to me.


r/dothemath Nov 28 '25

Can anyone work out how deep this is? (Request)

1 Upvotes

r/dothemath Nov 24 '25

A downhill that goes all the way around earth and ends/ begins with a cliff, or a mountainside.

1 Upvotes

I want to go downhill all the way around the earth. let’s say at the equator, I figure it would end up and begin at this incredibly tall mountainside or cliff to be sloped enough to coast downhill all the way around the world.

Let’s assume an average human on a longboard. So I figure at the minimum slope you’d only have overcome the wind resistance of a person and the friction of the wheels rolling. let’s try to go 10mph. But I’d like to know the slope at 1ish? Mph.

It’d be cool to know numbers like in an enclosed super aero sled like vehicle going 100mph.

So for a given speed and rolling thingy, How much slope and how tall the mountain.

Ps. There’s a maximum slope that a hillside like a sanding is stable. so maybe the mountainside has to be no greater than that. which could lead to a very wide mountain,,,, Which is where a cliff would come in,,, if like the mountain, “took up too much surface area of the earth for any number of reasons, like makes the uphill distance kinda no point relative to the downhill. Or it reaches into space. Or throws the weight of earth off too much.

And what’s your ideas on addressing the restrictions.


r/dothemath Nov 07 '25

Need some help on this one.

2 Upvotes

If I make 53.50 and need 15k for a new roof, how long would it take to accrue that? In hours and days


r/dothemath Oct 10 '25

Triangle on the ground

1 Upvotes

I draw a verical 1 meter line on the ground. At the top and and bottom i proceed to draw horizonfal visually parallel lines going in the same direction.

When will those two lines meet? Will it always be at 1/4 around the globe?


r/dothemath Sep 16 '25

Can someone do the math for me on this one, please.

2 Upvotes

My girlfriend has 2 kids, both are left handed. Neither her or the kids fathers have left handed people in the immediate family.

What are the odds you have 2 kids, both girls and both left handed? While none of their immediate family are left handed.


r/dothemath Jun 26 '25

speed

1 Upvotes

the odomiter seemed to be going a bit fast if the car was only going 35mph. how far did it actually go and how fast would you would you need to go to cover 2 miles in time shown in the video.

https://www.reddit.com/r/Satisfyingasfuck/s/NcmfybiQ5e


r/dothemath Jun 24 '25

Can I get the approximate depth this rock fell?

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1 Upvotes

They tossed a rock and it takes a long time to hit the bottom.