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 A^2 = B^3 + C^3
 Set {4,b,c,d,e} such that the product of any two of them increased by 1 is a square
 smallest integer whose first n multiples all contain a 3
 Set {3,b,c,d,e} such that the product of any two of them increased by 1 is a square
 Set {2,b,c,d,e} such that the product of any two of them increased by 1 is a square
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Monthly Archives: June 2012
Basic Math in the Movie: Die Hard with a Vengeance – Water Jug Puzzle
This is a fun puzzle: In the movie “Die Hard with a Vengeance”, Bruce Willis must measure 4 litres of water using two containers one with a capacity of 3 litres and the other with 5 litres. … Continue reading
When the last pair of digits of ndigit num3er is n times the first pair of digits
Here’s a fun little problem: To find a number such that the last pair of digits of a ndigit number is n times its first pair of digits. (1) If n = 3, that is, a 3digit … Continue reading
Kasparov vs #Turing #chess
For the first time in public, Mr Kasparov played a match against Turing’s chess program live on stage at The University of Manchester’s Alan Turing Centenary Conference. Although he won in just 16 moves, Mr Kasparov praised the prototype program … Continue reading
RockPaperScissors #Robot #tech #math
Janken (rockpaperscissors) Robot with 100% winning rate The purpose of this study is to develop a janken (rockpaperscissors) robot system with 100% winning rate as one example of humanmachine cooperation systems. http://www.k2.t.utokyo.ac.jp/fusion/Janken/indexe.html A British robot proves … Continue reading
Sharon Bertsch McGrayne: Bayes’ Rule #stats
“If you’re not thinking like a Bayesian, perhaps you should be.” —John Allen Paulos, New York Times Book Review The Theory That Would Not Die: How Bayes’ Rule Cracked the Enigma Code, Hunted Down Russian Submarines, and Emerged … Continue reading
Area between three tangent circles?
3 circles of radius r such that all three are externally tangent, what is the area of the shape in the center in terms of r? What’s the area between three tangent circles? Area … Continue reading
Triangular Numbers : Product #mathchat
Can you prove the following #1 #2 #3 #4 Triangular Number : Definition http://mathworld.wolfram.com/TriangularNumber.html http://en.wikipedia.org/wiki/Triangular_number
Brian Greene: What is Mathematics?
Physicist Brian Greene answers: “What is Mathematics?” Professor of Physics & Mathematics, Columbia University Brian Greene Official Website
What specific amount is a couple/ a few/ many/ several or numerous?
Question: What specific amount do you think of when saying …. …. a couple? …. a few? …. quite? …. a bit? …. bit by bit? …. quite a bit? …. quite a few? …. many? …. a lot? … Continue reading
New Mirror That Does Not Have Blind Spots (MathInTheNews)
Mathematics professor R. Andrew Hicks (Drexel University) received a U.S. patent for his redesign of the traditional side view mirror. According to a Drexel University press release, “Hicks designed his mirror using a mathematical algorithm that precisely controls the angle … Continue reading