085 = Coin Collections and Pin Selections

🪙 How many coins would you need to sort through to collect all commemorative €2 coins in circulation? 

📍How do you display enamel pins?! 

💼 The Any Other Business briefcase is…mostly open. 

Here’s the Coupon Collector’s problem video: https://www.youtube.com/watch?v=BstloCx8KDk

You can see more on the “Number of banknotes/coins returned from circulation in Euro Area, Euro area (changing composition), Monthly” here: https://data.ecb.europa.eu/data/datasets/BKN/BKN.M.U2.RE10.C.20P0.AS.F.E

And, Wiki Sources: “2 euro commemorative coins” on good old Wikipedia: https://en.wikipedia.org/wiki/2_euro_commemorative_coins

As always, send your problems and solutions to our website: www.aproblemsquared.com.

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