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<response><unit><id>b4fb5a7c-9bcc-454f-80ae-7473d8d4b874</id><parent_id>ba2b5eef-28e9-40e8-b26e-5c8f7b9d0125</parent_id><number>1.1.3.3</number><names>[{"lang":"es","name":"Rango de una matriz: método de Gauss"},{"lang":"en","name":"Rank of a matrix: Gaussian method"},{"lang":"ca","name":"Rang d'una matriu: mètode de Gauss"}]</names><difficulty>7</difficulty><created>7/18/16, 11:43 AM</created><modified>7/18/16, 11:43 AM</modified></unit></response>
