Find the 8th term of the series 1, 3, 9, ...
- 2187
- 6561
- 729
- 243
Explanation
A series is a geometric progression
Common ratio = 3 (1×3=3, 3×3=9)
Formula: an=1×3 ^n−1
8th term = 3^7 =6561
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Last updated by NS on 01 MAY 2026
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