Thursday, December 02, 2021

How Many Handshakes?

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(C)Copyright 2021, C. Burke. "AnthroNumerics" is a trademark of Christopher J. Burke and (x, why?).

As long as they don't share milkshakes.

If you draw the diagonals of an octagon then each point will touch each of the other 7 points. If you counted all the lines (which Mike hasn't drawn yet), you would get 28 of them. A touches 7, B touches A, which we already counted, and 6 more, C touches 5 more, D touches 4 more, E touches 3 more, F 2 more, and G 1 more. So 7 + 6 + 5 + 4 + 3 + 2 + 1 = 28.

Or through the Counting Principle, 8 * 7 is 56 handshakes, but since it takes two to shake and we don't care who shook whose hands first, we divide that number by 2 and get 28 again.

How much sanitizer do they need? That's up to each individual, but it probably isn't enough. Until it's too much.

I also write Fiction!

You can now preorder Devilish And Divine, edited by John L. French and Danielle Ackley-McPhail, which contains (among many, many others) three stories by me, Christopher J. Burke about those above us and from down below.
Preorder the softcover or ebook at Amazon.

Also, check out In A Flash 2020, by Christopher J. Burke for 20 great flash fiction stories, perfectly sized for your train rides.
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Come back often for more funny math and geeky comics.

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