quiz = {'is three an even number? '=>'no',
        'what is 6 + 3? '=>'9',
        'is this quiz too easy? '=>'yes'
        }

for i in quiz do |k,v|
  print k
  answer = gets
  puts answer
  if answer == v
    puts "that is correct!"
  else
    puts "you lose!"
  end
end