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Starbucks recently announced that it will stop providing plastic straws by 2020. How much impact do American plastic straws have on the environment?
In casino craps games, players repeatedly roll two six-sided dice, giving totals from two to twelve. What is the probable longest streak of consecutive sevens in the entire history of Las Vegas? (Thanks to Phil in Virginia Beach for inspiring the question.)
Look for the answers online at tpt.aapt.org
Question suggestions are always welcome!
For more Fermi questions and answers, see Guesstimation 2.0: Solving Today’s Problems on the Back of a Napkin, by Lawrence Weinstein (Princeton University Press, 2012).
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