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Sagot :
Final answer:
Sofía can communicate with David between 8:50 pm and 9:30 pm. The interval for communication would be [8:50 pm, 9:30 pm].
Explanation:
Sofía puede comunicarse con David en el intervalo de tiempo después de las 8:50 pm hasta las 9:30 pm. Para representarlo como operación con conjunto, sería [8:50 pm, 9:30 pm]. Esto muestra el rango de tiempo en el que podrían interactuar.
Learn more about Time Intervals for Communication here:
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