7 Doors Galore!!!

Fruity Pi
Topic: Probability, Counting & Combinatorics
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In this video we explained how to figure out how many combinations of doors you could go in and out of without going through the same door twice. Enjoy :)

Common Core Standards: 7.SP.8
Problem #: 
140 (2011-2012)
Problem Difficulty Level: 3 [?]