The Stolen Calculators

Team: 
Team1
Topic: Probability, Counting & Combinatorics
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Jaime and his team are ready for the MathCounts State Competition, but they misplaced their calculators! While Jaime tries to find his team's calculators, he finds a mysterious note from a random person. He must answer a problem to get his calculators back. The fate of the team rests in Jaime's hands!

Common Core Standards: 7.SP.8
Problem #: 
76 (2017-2018)
Problem Difficulty Level: 2 [?]