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  1. array1 = [1,2,3,4,5,6,7,8,9,10]
  2. sum1 = 0
  3. sum2 = 0
  4. ser = 0
  5. for i in (0..10)
  6.  
  7. sum1 = array1[i]
  8. sum2 = (sum2 + sum1)
  9.  
  10. end
  11.  
  12. ser=sum/10
  13.  
  14. puts "ser = #{ser}"
Runtime error #stdin #stdout #stderr 0.06s 9648KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
prog.rb:8:in `+': nil can't be coerced into Fixnum (TypeError)
	from prog.rb:8:in `block in <main>'
	from prog.rb:5:in `each'
	from prog.rb:5:in `<main>'