0xbitcoiner

1. e - {√(e+1)+2}+(e-e^(-3))√(e-4)
e=8 |> 8 - {3+2}+(8-2)*2 = 8-5+12 = 15
2. 3a - [b+(2a-b)-(a-b)] = 3a - (b-a) = 2a-b

Too much work to type all that on my phone. 😅

Murch

Interesting how much things have changed in 100 years.  This would be considered middle school to early high school level math nowadays.  


SimpleStacker

WeAreAllSatoshi

science

No time today for a properly curated puzzle, so I leave you with a (surprisingly easy?) entrance exam sheet for MIT. I assume this to be real, but I could not check it. Time constraints might have been the limiting factor in this exam.

![](https://m.stacker.news/55093.jpeg)

Previous iteration: https://stacker.news/items/705338 (I just updated a [visual representation](https://stacker.news/items/705338/r/south_korea_ln?commentId=706301) of the surprising validity of that equality).