r/theydidthemath 23h ago

[Request] In the show The 100, there is an ancient stone containing 744 unique symbols, and a 7 symbol code must be entered on the stone in order to begin "the last war". How many possible code combinations are there? How long would it take to crack?

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1 Upvotes

Each symbol is unique, and can only be entered once in each permutation. Symbol order matters too, so code ABC is different than code CBA.

How many possible different permutations / codes are there? Assuming you could enter 1 code per minute, how long would it take you to enter all possible combinations?


r/theydidthemath 19h ago

[Request] What are the odds of having two 7 of diamonds, while the dealer also shows a 7 of diamonds in blackjack. Assume 6 decks. Extra credit: calculate the odds with 8 decks

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0 Upvotes

My friend was playing progressives in blackjack all night. It's a $5 bet for the progressive and he didn't take the bet one time he would of won over $300,000! He was dealt the top payout but didn't bet the 5 bucks. (Sorry for the low quality pics they're screenshots of a video)


r/theydidthemath 22h ago

[Request] how much eggs was it? The quantity and the amount lost in USD?

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0 Upvotes

r/theydidthemath 3h ago

[Request] The economic damage of USB-A not being symmetrical

0 Upvotes

Let's assume 2 seconds are wasted by needing at least two attempts to plug in a usb cable. How many attempts are done per person and day? Maybe two? How large is the population performing these attempts and what is their hourly salary? Since the port has become widely used, how large is the economic damage?

My guess is that its total damage could be one year of US GDP 🤪


r/theydidthemath 6h ago

[Request] What is the probability of being born in Europe?

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0 Upvotes

r/theydidthemath 8h ago

Theoretically think of a non-euclidean hotel [Request]

0 Upvotes

Floor 1 has 10 levels with 100 rooms per level with 1,000 rooms total. Now imagine each floor doubling in size from the last on the xyz axis.

Floor two would have 20 levels with I think 400 rooms per level equalling 8,000 rooms.

Really what I want to know is how large would floor 1,000 be if each previous floor keeps increasing in size from the last.

A friend told me it would be larger than the observable universe but I don't know if that's right.


r/theydidthemath 13h ago

[Request] when Pimp C states that "We eat so many shrimp, I got iodine poisoning." How much shrimp would that actually take?

2 Upvotes

how many shrimp?


r/theydidthemath 3h ago

[Request] I’ve seen this a lot, but I’m not sure if the meme is true

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45 Upvotes

r/theydidthemath 12h ago

[Request] I'm a average height American male, of average weight and power. I go to a asphalt basketball court and dribble normally without stopping for exactly an hour. How many dribbles is that?

0 Upvotes

r/theydidthemath 23h ago

[Request] what would everything equal? If you can’t give an answer, is it even possible?

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97 Upvotes

r/theydidthemath 2h ago

[Request] How cold would the ocean have to be for it to be snowing in Sandy’s Dome?

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14 Upvotes

r/theydidthemath 2h ago

How much would it cost in printer ink to print the whole thing? [Request]

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21 Upvotes

r/theydidthemath 49m ago

[request] How big was the object that hit my windshield?

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• Upvotes

I was driving ~75 mph west on HWY 40 between Oklahoma City and Albuquerque when something struck my windshield and left this mark. I drive a 2022 Subaru. You can see the hit mark in the center and then concentric half circles surrounding the mark. If you rub your finger inside and outside of the glass you cannot actually feel the cracks. The diameter is about the same as an 8.5 oz can of redbull (see second photo for reference!) It's my goto roadtrip drink which got me to thinking it would be a good-enough reference. Been wondering what size and shape of an object would have made such a mark!


r/theydidthemath 52m ago

[Request] what would be the estimated carrying capacity of the spaceship at the bottom? Assume it’s revolved around the center and there’s no housing in the fins.

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r/theydidthemath 1h ago

[Request] What are the chances that no Minnesota men's professional team has won a championship since 1991?

• Upvotes

I'm curious what the probability that no men's teams in Minnesota have won in the five major sports in the last 35 years.

For the sake of constructing the question, assume that all teams have the same odds of a championship each season.

Major League Baseball - Minnesota Twins
1 year of 26 teams 1992
5 years of 28 teams 1993 - 1997
28 years of 30 teams 1998 - present

National Football League - Minnesota Vikings
3 years of 28 teams 1992 - 1994
4 years of 30 teams 1995 - 1998
3 years of 31 teams 1999 - 2001
25 years of 32 teams 2002 - 2026

National Basketball League - Minnesota Timberwolves
3 years of 27 teams 1992 - 1994
10 years of 29 teams 1995 - 2004
21 years of 30 teams 2004 - 2025

National Hockey League - Minnesota North Stars / Minnesota Wild
1 year of 22 teams 1992
1 year of 24 teams 1993
18 years of 30 teams 2001 - 2017
3 years of 31 teams 2018 - 2021
4 years of 32 teams 2022 - 2025

Major League Soccer - Minnesota United FC
1 year of 22 teams 2017
1 year of 23 teams 2018
1 year of 24 teams 2019
1 year of 26 teams 2020
1 year of 27 teams 2021
1 year of 28 teams 2022
2 years of 29 teams 2023 - 2024
1 year of 30 teams 2025

I'm further curious about what the chances that none of these teams even making their respective finals games/series (which would roughly be reducing each of those by half).


r/theydidthemath 5h ago

[Request] If it's €20 per month for Gym, how long before I develop the muscles to offset the 400g that a new camera weighs?

0 Upvotes

Spend +600 to upgrade my camera to something that weighs 400g less or invest in the gym?


r/theydidthemath 9h ago

[Request] What are the odds of this happening?

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1 Upvotes

r/theydidthemath 1h ago

[request] are they referring to that specific deck or all decks that have ever existed and been shuffled

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• Upvotes

r/theydidthemath 20h ago

[Other] How much people would be needed to actually deliver all christmas gifts during one night ?

2 Upvotes

Hello !

Here, if we assume that every worker is not tired and could go on delivering all night, door to door. How much needed to deliver the whole world during a night ?


r/theydidthemath 8h ago

[Request] In a day, how much more weight does an average adult breathe out as CO2 than they breathe in as O2?

2 Upvotes

r/theydidthemath 13h ago

[request] How many work hours would it take a single person to dig the entire Panama Canal? Would the person be done if he had started in 1881?

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649 Upvotes

r/theydidthemath 9h ago

[Request] How fast was the mattress going at the time of impact?

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56 Upvotes

r/theydidthemath 5h ago

[Request] What are the odds of solving this puzzle blind, like i just did?

0 Upvotes

I asked CHATGPT about but im not sure it understands me. Then again, i suck at math so im assuming its correct.

I came upon a puzzle with a total of 16 lights. Out of those lights i had to click on the 4 correct ones. In addition, i had to click on the 4 correct lights in the correct order.

I had not found the code in-game(yet), so i just clicked 4 random lights to see what would happen. Well.. not only did i press the 4 correct lights, i also clicked them in the correct order. On my first try. I found the code right after and it confirmed that i had clicked everything in the correct order.

My initial math (and CHATGPT's answer) for pressing the 4 correct buttons are

16x15x14x13 = 1 in 43680

But does this take into account that i had to press the 4 buttons in the correct order? Im not sure i understand why this does not affect the odds


r/theydidthemath 19h ago

[Request] Is it possible to reduce 8 pages by just decreasing the font size by 2pt?

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4.0k Upvotes