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- require 'rubygems'
- class Array
- def indice
- resultado = 0
- materias = 0
- puts self#.each { |tri|
- # resultado += tri
- # materias++
- #end
- #resultado /= materias
- #resultado
- end
- end
- trimestre = [4, 4, 4, 4]
- puts trimestre.indice
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