Dudeney’s Remainder Problem

October 6, 2024 | John Mount

The remainder problem The description of this puzzle really cracks me up (Dudeney, Strand Magazine, January 1924). Health risks aside, how do we find the maximal integer d such that (480608 % d) = (508811 % d) = (723217 % d)? The solution A good puzzle strategy is to try […]
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Is round(0.5) 0 or 1?

October 5, 2024 | jhk0530

Actually, it’s both possible This Article was originally published before on YOZM-IT as Korean Various way of data science  There are many programming languages in the world and software that utilizes them. And those play an important role in “Data science”. For example, if you’re using funnel analysis ...
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An Easy Puzzle: The Perplexed Banker

October 4, 2024 | John Mount

Nina Zumel continues with the puzzles. This one is “The Perplexed Banker”. In my opinion, this one captures the essence of the “mathematical” aspect of a puzzle. For a mathematical puzzle one often hopes there is a systematic method that makes the puzzle easy. In this case there is indeed […] [Read more...]

Reading REDATAM databases in R

October 2, 2024 | pacha.dev/blog

REDATAM REDATAM (Retrieval of Data for Small Areas by Microcomputer) is a data storage and retrieval system created by ECLAC and it is widely used by national statistics offices to store and manipulate census and survey data. However, conductin...
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Economic Calendar

October 1, 2024 | R - datawookie

I needed an offline copy of an economic calendar with all of the major international economic events. After grubbing around the internet I found the Economic Calendar on Myfxbook which had everything that I needed.
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Hands-On Differential Privacy [book review]

October 1, 2024 | xi'an

Hands-On Differential Privacy was published just a few months ago (from September  2024!) by (the US publisher) O’Reilly, famous for its programming and technical books with animal covers! A slate pencil sea urchin in the present case. The book is indeed classical O’Reilly’s, with lots of notes, little ...
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PowerQuery Puzzle solved with R

October 1, 2024 | Numbers around us

#221–222PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #221We already had task to provide indices for some structured project, and here we go again. Once again I...
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