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OpenStudy (anonymous):
Ms. White has 15 students in her first grade class. Troy is the line leader for the week, and Mackenzie is last because she was the line leader last week. In how many different ways can Ms. White's class line up for lunch? 13! 15! 15! ÷ 2!
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OpenStudy (anonymous):
what do you think? where did you get stuck?
OpenStudy (anonymous):
15!
jimthompson5910 (jim_thompson5910):
No it's not 15!
OpenStudy (anonymous):
explain your reasoning, and we can see what you're missing
OpenStudy (anonymous):
13.
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OpenStudy (anonymous):
13!
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