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## Lesson synopsis

How do you know how fast a computer can calculate an answer, or whether an answer can be calculated at all? The field of Computational Complexity is the study of whether problems can be solved, and how fast. This lesson introduces some simple ideas about algorithms and their complexity through a series of exercises involving a collection of socks. Of course, other objects can be used as well. This is an active learning lesson that does not require access to a computer. Linear, polynomial, and logarithmic algorithms are explored building an intuitive understanding of order of magnitude.

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