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Feb 26th, 2012
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  1. require './integer'
  2. require 'prime'
  3.  
  4. limit = ARGV.first.to_i
  5. method = ARGV.last.to_sym
  6.  
  7. sum = (2...limit).select(&method).inject :+
  8.  
  9. puts "sum(primes < #{limit}) = #{sum}"
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