# Monthly Archives: August 2019

## Harold Edgerton: “The Trick to Education Is …”

“The trick to education is to teach people in such a way that they don’t realize they’re learning until it’s too late.” — Harold Eugene “Doc” Edgerton (April 6, 1903–January 4, 1990), a.k.a. “Papa Flash”, photographer

## Can You Find Three Digits for A, B and C Such That ABC in Base-10 Is Equal to CBA in Base-9?

The only 3-digit answer is $$544_9 = 445_{10}$$. However, there are answers in other bases: $$211_3 = 112_4$$ $$322_5 = 223_6$$ $$433_7 = 334_8$$ $$544_9 = 445_{10}$$ Are you seeing a pattern here? Does the pattern extended to bases higher than 10? Does $$655_{10} = 556_{11}$$? Does $$766_{11} = 667_{12}$$? Cheating a little bit by… Read More »