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Entre les inversions alternatives següents,1ª inv: -1.000 / 200/ 300 / 400 / 9002ª inv: -1.000 / 300/ 200 / 600 / 6003ª inv: -1.000 /100/ 100/ 100 / 100 /100 / 99.999.999
aplicant exclusivament el criteri del pay-back, triaríem