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|Browse hundreds of challenging problems that require mathematical insights as well as computer and programming skills to solve. Popular puzzles include "Add all the natural numbers below one thousand that are multiples of 3 or 5," "By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms," "Find the largest prime factor of a composite number," and "What is the difference between the sum of the squares and the square of the sums?" Login to submit your solutions. Project Euler grew from a sub-section of Hughes' MathsChallenge.net.|
|Levels:||High School (9-12), College|
|Resource Types:||Problems/Puzzles, Internet-Based Projects, Recreations|
|Math Topics:||Number Theory, Computer Science|
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