July 1, 2009 – William M. Briggs

Public Enemies — by Bryan Burrough

I am re-posting this book review because the movie came out today, and it might be of interest. Public Enemies: America's Greatest Crime Wave and the Birth of the FBI,…

Phil R on Test Your IQ With These Puzzles! (Not So Easy!)July 1, 2025
...and I saw 5 or 25 in the figure. The division answer never occurred to me. Got all the rest…
Phil R on Test Your IQ With These Puzzles! (Not So Easy!)July 1, 2025
If someone asks a question that is conditional on some evidence or rule that they conveniently (or purposely) leave out,…
McChuck on Test Your IQ With These Puzzles! (Not So Easy!)July 1, 2025
The answer for the pictured question is obviously '1', as the slot already has a '1' in it, which has…
Briggs on Test Your IQ With These Puzzles! (Not So Easy!)July 1, 2025
Mark, That's exactly it.
Mark on Test Your IQ With These Puzzles! (Not So Easy!)July 1, 2025
Wittgenstein gave some examples like this in his Remarks on the Foundation of Mathematics, a book I had no business…