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5. A theatre has 20 rows of seats. There are 15 seats in the first row, 17 in the second and each row has 2 more than the previous. a) Calculate the number of seats in the 20th row b) Calculate the total number of seats

5. A theatre has 20 rows of seats. There are 15 seats in the first row, 17 in the second and each row has 2 more than the previous. a) Calculate the number of seats in the 20th row b) Calculate the total number of seats

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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5. A theatre has 20 rows of seats. There are 15 seats in the first row, 17 in the second and each row has 2 more than the previous. a) Calculate the number of seats in the 20th row b) Calculate the total number of seats
Transcribed Image Text:5. A theatre has 20 rows of seats. There are 15 seats in the first row, 17 in the second and each row has 2 more than the previous. a) Calculate the number of seats in the 20th row b) Calculate the total number of seats
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