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etianen/Project Euler problem 1

Created May 3, 2010 18:39
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Project Euler problem 1
-- Quick and dirty solution
sum [n | n <- [1..999], n `mod` 3 == 0 || n `mod` 5 == 0]
-- Better, more efficient solution
sum [1,3..999] + sum [1,5..999] + sum[1,15..999]
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