Combinations will get the millions!!!

Team: 
The Gameshow Gamers
Topic: Probability, Counting & Combinatorics
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Four girls want to win a game show, but they receive a very hard problem about combinations. They have to get this question right to win the million dollars, but they are very stuck. Will they be able do do it?

Common Core Standards: 7.SP.8
Problem #: 
25 (2012-2013)
Problem Difficulty Level: 2 [?]