欧拉计划第一题

class 
  def Multiple3and5Sum
    sum = 0
    number = 3...1000
    number.each do |n|
      sum += n if n%3 ==0 ||n%5 ==0
    end
    puts "The sum is #{sum}"
  end
end

el = Euler_2nd.new
el.Multiple3and5Sum()

The sum is 233168