A line of people waiting to enter a theater consists of 7 separate and successive groups. The first person in each group purchases one ticket for each person in the group and for no one else. If n is the total number of tickets sold for the first 6 groups, is n an even group?
(1) there are no more than 4 people in each group
(2) the 19th person in line purchases the tickets for the 7th group
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