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1000 Lockers

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Author:Math Forum, Ask Dr. Math Common Question
Description: A selection of answers to the "locker problem": "There are 1000 lockers in a high school with 1000 students. The problem begins with the first student opening all 1000 lockers; next the second student closes lockers 2,4,6,8,10 and so on to locker 1000; the third student changes the state (opens lockers closed, closes lockers open) on lockers 3,6,9,12,15 and so on...."
Levels: Middle School (6-8)
Languages: English
Resource Types: Frequently Asked Questions (FAQs)
Math Topics: Number Sense/About Numbers, Patterns/Relationships, Problem-Solving

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