HQ. Newton v Leibnitz
A break from puzzling to discuss the history of the great Newton-Liebnitz dispute over the invention of Calculus, with the playwright Todd Taylor.
Archive for March, 2012
HP. Happy Root 10 Day!
For procrastinators only, we celebrate √10 day! And we pose a new puzzle:
The number of 1’s in this quiz is ____
The number of 2’s in this quiz is ____
The number of 3’s in this quiz is ____
The number of 4’s in this quiz is ____
There are actually two solutions to this one, but more generally, what happens with more lines in the quiz?
Finally, here’s the link to the special issue of Nature with essays on the great Alan Turing.
HO. Crazies on the Plane
We all know this feeling: someone’s in your seat, and now you’re the nutcase who’s going to take someone else’s seat. After all that what’s the probability the last person on the plane will be able to sit in the correct seat?
The three number trick is just a simple version of this one (but here it is quicker and simpler).
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