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Mathematics 7 Online
OpenStudy (anonymous):

An auditorium has 21 rows of seats. The first row has 18 seats, and each succeeding row has two more seats than the previous row. How many seats are there in the auditorium? 1. 540 2. 567 3. 760 4. 798

OpenStudy (goldphenoix):

Actually, it's 798.

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