From The Daily Dot: To date, there is no known shortcut to quickly factor large integers into primes. It has never been proven that no such shortcut exists. We’ve just never found one. If the unfactorable nature of these large integers doesn’t … Continue reading
See also: World’s Greatest Drag Race 1 (with lesson) World’s Greatest Drag Race 2 Classroom action from my 180 photos blog Drag race page on 101qs.com
From the weekly car talk puzzler: RAY: A farmer had a 40-pound stone which he could use to weigh 40 pounds of feed; he would sell feed in 40 pounds, or bales of hay, or whatever. He had a balance … Continue reading
Linked from the Visualizing Math blog, a cool simulation of bouncing balls with randomized gravity and bouncing coefficients. Forward Slash Reality Check out the video too.
I never could remember how to solve these type of questions. RAY: Tommy, Dougie and I are sitting around the office one day at Car Talk Plaza. We were noticing how dingy the place looked. We’d been there 15 years, … Continue reading
Are big ice cubes worth it? Do they dilute your drink slower? Dr. Drang looks at the math behind it. This needs some more investigation. Also: sphere icecubes.
The truth is, most of us discover where we are headed when we arrive. Must read advice from Bill Waterson on Brain Pickings, Maria Popova’s blog. Your preparation for the real world is not in the answers you’ve learned, but in … Continue reading
Neat link: Team Maker Allows you to paste in a roster and make random groups. No friction, no mess. Cool stuff.
Number theory nugget: 357686312646216567629137 is a prime number which remains prime after removing any number of digits from the left side! — Maths World UK (@MathsWorldUK) March 4, 2013 Otherwise known as left-truncating primes with every suffix prime and no … Continue reading
How far away is the meteor from this security camera when it explodes?