An audituriom has 10 seats in the first row and 2 additional seats in each succeeding row. If there are 25 rows, how many seats are there in last row?
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1st row 10........
2nd row 12.......
3rd row 14........
........................
..........................
25th row is 58.........
the total no of seats in the last row is 58......
hope it helps u............
Answered by
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Answer:58
use Arithmatic progression An = A1+d(n-1)
A1= 10 , d= 2 , n = 25
an = 10+ 2(25-1) = 58
Step-by-step explanation:
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