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Friday, March 13, 2020

Pic of the Day

Mental Arithmetic in the Rachinsky SchoolNikolay Bogdanov-Belsky - 1895
The problem on the board is (102 + 112 + 122 + 132 + 142 ) / 365. The answer is 2.       (highlight to reveal the answer). Kind of a cute little problem. I didn't notice the problem on the board at first, I thought it was just a cool picture, but then I started looking around and mathoverflow pointed out the problem on the board.

Via Starts with a Bang!

P.S. I made the superscript exponents using the html <sup> tag. I originally tried using the html code I found on mathoverflow, but the html was like four pages long and I couldn't make head or tails of it. PeggyK, a Platinum Product Expert, gave me a clue.

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