2014-11-14 08:57:29 +00:00
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def multiples_of_three_and_five_below(n)
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2014-12-05 00:50:52 +00:00
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(3..n-1).select { |i| (i % 3 == 0) || (i % 5 == 0) }
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2014-11-14 08:57:29 +00:00
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end
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2014-12-05 00:50:52 +00:00
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def solution
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multiples_of_three_and_five_below(1000).inject(:+)
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end
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