The given query which states that “How can a girl go 25 days without sleep?” is a puzzle or riddle. When we keenly read it more than twice we can understand that 25 days without sleep is given. Usually normal people won’t sleep during the day time.
Night is the time to the sleep. Thus the riddle can be answered in this way stating that a girl can go "25 days without sleep" because "she sleeps at night".
