r/theydidthemath

▲ 426 r/theydidthemath+2 crossposts

Got carried away with an oil top up, do I need to correct this or is it realistically fine?

As title said, had low engine oil so whacked in a quart and then got this reading. Renault Clio, 1.0 litre petrol

UPDATE: It's overfilled and could be a problem, taking it to get air con service anyway so will just get them to drain some for me, I clearly can't be trusted with oil

u/ramper770 — 9 hours ago

[Other] A die does not need to be Platonic in order to be fair

In a post with the same picture, many commenters seem to believe that a die must be Platonic in order to be fair.

Here is the post: https://www.reddit.com/r/theydidthemath/comments/1tilwsy/request_assuming_they_both_are_perfectly_balanced/

This post is a resonse to that.

That is not true. The dice on the right are fair dice even though they are not Platonic.

A die with 10 kite-shaped faces is perfectly symmetric and (under obvious physical assumptions about homogeneity of the material etc) gives a fair dice.

The definition of Platonic solids is too strict to include all polyhedra that yield fair dice.

As long as the solid is "the same" when "seen from" every face, it will yield a fair die. That's obviously not necessary, but proving fairness without symmetries is a hell of a hard task.

In the picture, the one on the left is ridiculous. The faces are not even equal to each other, let alone the whole solid be equal as seen from each face.

u/WorkingQuarter3416 — 7 hours ago
🔥 Hot ▲ 6.5k r/theydidthemath+2 crossposts

Teachers need to get better salaries, real respect, have their voices heard more, and have the space to do their work.

I am a teacher. I worked at schools in the past and was underpaid. But I switched to working from home through freelancing platforms, and it made a huge difference. So, I advise every teacher to apply to online schools or work through freelance platforms. And if you get stuck during an interview, you can use an AI platform like InterviewMan to help structure your answers and boost your confidence.

u/Big-One5074 — 22 hours ago
▲ 212 r/theydidthemath+1 crossposts

A single block of instant ramen contains roughly 50 meters of noodles...the length of an Olympic swimming pool

If you were to unroll every single wavy strand in a standard pack of instant ramen, it would stretch out to about 50 meters (164 feet).

u/Nongshim_official — 15 hours ago
▲ 37 r/theydidthemath+1 crossposts

Walkie talkie

I use a FRS walkie talkie with 22 channels with my dad in a populated city, what are the chances someone tunes into my conversations? We just use them at home.

reddit.com
u/Careless_Elk4059 — 16 hours ago

[Request] How much nicotine is consumed each day assuming they each hit 10,000 vapes/day as stated in the OP I found this?

This seems insanely unhealthy at best…

u/Sgt_Rickshaw — 1 day ago