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Top comments (1)
Respuesta:
B:
20Desde ES6 es posible usar parámetros por defecto (siempre y cuando sean los últimos declarados en la función).
En este caso el parámetro por defecto
num1es el mismo que el primer parámetro, no hay ningun problema simpre y cuando este declarado al final de la lista de parámetros de la función.Pasamos el argumento
10a la funciónsum, esto significa quenum2deberá usar su valor por defecto que seria el mismo denum1, osea10; entonces10 + 10nos da el resultado final20.