Is there a "LeetCode" type website for math & prob brain teasers?

[ThatQuant]

Is there a LeetCode like resource for doing these type's of questions? Or particularly, I would love a website where basically it sees how many math & prob brain-teasers you can answer on the clock, maybe even sort of a "zetamac" for brain teasers?

 

[Daniel Duffy]

Sounds mind-numbing and demoralising.

 

[binomial-torrent]

Sounds mind-numbing and demoralising.

yes. that being said:

Interviewbrainteasers.com

 

[Daniel Duffy]

I suppose it's a fixed number of tricks to learn and practice.
In the 60s school kids had 'mental arithmetic' classses.

typical example: divide x^3 - 4x^2 - 11x + 30 by x+3 in your head.


what about a mental abacus?

Mental abacus - Wikipedia

en.wikipedia.org