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Pastimes : Laughter is the Best Medicine - Tell us a joke
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To: Sun Tzu who wrote (61640)12/9/2022 6:43:13 PM
From: Jeffrey S. Mitchell  Read Replies (2) of 62549
 
That is correct. And that is the inverse property of math!

For example, if the 30 coins you separated had 0 with their blue side up, then that leaves all 30 blue-side-up coins in the other pile. Flipping these 30 red-side-up coins means you end up with a matching 30 blue-side-up in this smaller pile. Similarly, if you somehow blindly separated six blue-side-up coins among the 30, that leaves 14 in the other pile. Flipping these 30 obviously turns six to red and the other 14 to blue-- a match. And so forth.

Congrats!

- Jeff
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