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Sequences and series, whether they be arithmetic or geometric, have many applications to situations you may not think of as being related to sequences or series. In order to work with these application problems, you need to make sure you have a basic understanding of arithmetic sequences, arithmetic series, geometric sequences, and geometric series. Q1. An auditorium has 20 seats on the first row, 24 seats on the second row, 28 seats on the third row, and so on, and has 30 rows of seats. How man