# arithmetic series and geometric series

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Thread starter 1 month ago
#1
hey can you guys help me to solve this question?
The sum of the first n terms of an arithmetic series is 3n/2 (4n-4) . If the third and sixth term of the arithmetic series are the third and the fourth term of a geometric series respectively, find the sum of the first ninth terms of this geometric series.
Last edited by aisyahzaini; 1 month ago
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1 month ago
#2
(Original post by aisyahzaini)
hey can you guys help me to solve this question?
The sum of the first n terms of an arithmetic series is 3n/2 (4n-4) . If the third and sixth term of the arithmetic series are the third and the fourth term of a geometric series respectively, find the sum of the first ninth terms of this geometric series.
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