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Mathematics, 28.10.2019 05:31 savannabroyhill24
Atheater has 30 rows of seats. the 1st row contains 20 sets, the 2nd row contains 21 seats, and so on, each row has one more seat than the previous one. how many seats are there in the theater?
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Atheater has 30 rows of seats. the 1st row contains 20 sets, the 2nd row contains 21 seats, and so o...
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