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Last active August 29, 2015 13:56
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; If we list all the natural numbers below 10 that are multiples of 3 or 5,
; we get 3, 5, 6 and 9. The sum of these multiples is 23.
; Find the sum of all the multiples of 3 or 5 below 1000.
(reduce + (filter #(or (= 0 (mod % 3))
(= 0 (mod % 5)))
(range 1000)))
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