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ACT
Based off of the hit television show NUMB3RS, this lesson is good practice for students who have already learned about permutations. U.S. Social Security Numbers are explained, and then students find the number of different SSNs which satisfy given conditions and restrictions. A brief history of SSNs is also presented.
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- Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)