r/theydidthemath • u/Fryzoke • 3d ago
[Self] How big is a “sound-year”?
Silly question I asked myself while avoiding sleep.
r/theydidthemath • u/Fryzoke • 3d ago
Silly question I asked myself while avoiding sleep.
r/theydidthemath • u/why_is_this- • 2d ago
In Friends they buy $300(ish) worth of lottery tickets, (5 numbers + powerball) and only win $3 after they hit 7 on the powerball of one ticket. To only have one ticket with 7 as the powerball seems unlikely to me and got me thinking, what is the likely return on $300 worth of lottery tickets?
r/theydidthemath • u/AliveCryptographer85 • 2d ago
How much money do I need to start with to ensure, (or have a 99% chance of) not going bankrupt as the number of flips approaches infinity?
r/theydidthemath • u/tired_Cat_Dad • 2d ago
Hey smart fellas! Talking about hypothetical questions, this came up. If I had a broomstick like that I would want to put it in a fuselage with a comfy seat. So it could go faster because of aerodynamics (plus weatherproofing) and because I don't think a stick wedged between your cheeks is all that great for extended periods.
I'm neither a Harry Potter buff nor do I have the skills to easily estimate the Newtons his stick puts out. If anyone could help with that, it would be great!
If you're versed in aerodynamics, light flying machines or else, maybe you could make an educated estimate of what acceleration and top speed would be possible at sea level using this magic thrust with an aerodynamic shell while considering the added weight of the shell, seat, some instrumentation (basically just the pod portion of a glider plane).
I'm aware this would enable The Expanse style space travel, if more than one of these brooms could exist in this hypothetical scenario, so go wild with that if you want, but I'm mostly interested in the ultralight aircraft powered by one magic broom.
r/theydidthemath • u/tristan-chord • 2d ago
I was just trying to report a bug and find a fix for my Strava data, but people seem to believe my assumption is wrong.
My concept of a proof is this: if my fastest split is a certain speed, that means all other splits are slower than my fastest. Doesn't matter how I slice it, as long as every other split is slower, and my average is the average of all the splits, my average will always be slower than my fastest split.
This seemed completely logical to me but did I miss anything?
r/theydidthemath • u/beastmode69301 • 2d ago
Hi, my first post here, and I'm not too sure how the rules work, so mods please forgive me.
My friend has apparently racked up 475+ hours on Siege during a season which has had a total of 2160 (ish) hours so far.
The guy has had to take a day off every weekend last month to do work, and one weekend he worked on both days. He also goes to college and does and average of 7-8 hours. He says he only sleeps maybe 3-4 hours (which is most likely a lie). He also took a few days off to go skating and things like that. He also says he's top 1200 in the UK.
I'm asking if there is any way he could feasably have done this whilst also maintaining at least some semblance of a social life?
Answered by u/GIRose
r/theydidthemath • u/SMACKlaren • 4d ago
r/theydidthemath • u/SalomonG18 • 2d ago
I was cutting some baseboards but this wall in my house is NOT a 90 degree angle. Both baseboards are cut at a 44 degree cut. In order to preserve the long baseboard, would I be able to cure more. I have an angle finder if that helps with the math. The angle finder shows 11.5 degrees
r/theydidthemath • u/Affectionate-Mix6056 • 4d ago
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r/theydidthemath • u/mraltuser • 2d ago
Rotating the whole cube does not count btw
r/theydidthemath • u/acidicDud • 4d ago
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r/theydidthemath • u/303red • 3d ago
r/theydidthemath • u/Orca36 • 2d ago
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Always see these trucks slinging garbage cans and have wondered the rotation of the can itself and the rotation of the lid makes it go pretty quick. Ignoring the tree in the way, how fast does it go?
r/theydidthemath • u/kamain42 • 2d ago
Hello. Today's request comes courtesy of an anime titled the 100 girlfriends who really really love you . Season 1 episode 5. Our main hero encounters a girl who factors pie π to calm down. (Also a great quote love is pie.. pie is life) Best guest how far did she get in the scene. The pages are about 22 across and there is a white board involved . It's implied she stuck some on ceiling.( Or a table with a round fixture.) Not looking for exact answers.. just best guess.
r/theydidthemath • u/TheBlueMoonHubGuy • 2d ago
This might be a weird one, but on a Discord server I'm in there's a gambling bot, and I played blackjack (not real money dw). This bot uses three 52-card decks in blackjack, so 156 cards in total.
My hand in the first game was a 10 and a king, which added up to 20, and my second game my hand was two queens, which also added up to 20. What are the chances of drawing a value of 20 in two separate games in a row?
r/theydidthemath • u/Ofajus • 5d ago
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r/theydidthemath • u/Devincc • 3d ago
r/theydidthemath • u/Itchy-Cucumber2700 • 4d ago
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Saw this and thought of you guys..
r/theydidthemath • u/ZZS • 3d ago
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r/theydidthemath • u/Abdul-Wahab6 • 4d ago
This video currently has 1.4 million views. Taking into assumption the average cost of tickets and the amount the movie has made and also the amount of theatres it was shown in, has this video gotten more views than the actual movie itself.
r/theydidthemath • u/nerdkim • 4d ago
r/theydidthemath • u/snozzberrypatch • 4d ago
r/theydidthemath • u/LazarouDave • 3d ago
As the title says - I was playing a game of Scrabble, and neither player drew an 's' out of the bag (I believe there are 100 tiles?) until very late in the game, I checked and there were 14 tiles left in the bag after the S was drawn (there are 4 S tiles in the game) - and it was the last tile drawn from that specific round of picks.
What are the odds of it taking that long to draw an S?
r/theydidthemath • u/Individual-Pea-7155 • 3d ago
Recently I was doing a “Hot Wheels Race Raffle” at a nonprofit banquet. The raffle consists of multiple Hot Wheels on a treadmill tilted up so the cars are going downhill. The speed of the treadmill is slowly increased until cars start falling off the back and the last one standing wins. Super fun game/raffle. Anyway, I was having trouble getting a winning car so I was increasing the speed of the treadmill and got it up to 10-12mph. At which point a guy watching the race made a comment that if a wheel locked up, it could “fly back and kill someone.” It’s ridiculous to think a hot wheels car being launched at 12mph could kill someone. At what speed would a hot wheels car have to travel to kill someone or cause any major damage?