# publicsmithclay/euler-ruby

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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 `# Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:# 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...# By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.# Solution: 4613732def isEven?(n)  n % 2 == 0enddef fib_term_sum(limit, test)  term = 0  n = 3  vals = [0, 1]  begin    (n-1).times do       vals.push(vals[-1] + vals[-2])     end    term = vals.last    n += 1  end until term > limit    vals.first(vals.length-1).reduce(0) do |sum, x|     sum += test.call(x) ? x : 0  endendputs fib_term_sum(400000, method(:isEven?))`
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