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There is an auditorium with 27 rows of s...

There is an auditorium with 27 rows of seats. There are 20 seats in the first row, 22 seats in the second row, 24 seats in the third row and so on. Find the number of seats in 15th row and the total seats in the auditorium.

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The correct Answer is:
The number of seats in the 15th row is 48.
Total seats in the auditorium are 1242.
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