<?xml version="1.0" encoding="UTF-8"?>
<response><unit><id>d0e8fb38-9718-4e6a-93d7-e51c8b8b2451</id><parent_id>fa4a9bc2-6f57-42be-8391-90e225f8127f</parent_id><number>6.3.11</number><names>[{"lang":"es","name":"Probabilidad de la unión e intersección de sucesos"},{"lang":"en","name":"Probability of the union and the intersection of events"},{"lang":"ca","name":"Probabilitat de la unió i de la intersecció de successos"}]</names><difficulty>6</difficulty><created>7/18/16, 11:43 AM</created><modified>7/18/16, 11:43 AM</modified></unit></response>
