Example 7 - Chapter 8 - Predicting What Comes Next: Exploring Sequences & Progress

Last updated at August 14, 2026 by

Example 7 - Is 1, 3, 9, 27, 81, โ€ฆ a geometric progression? [Video] - Geometric Progressions

part 2 - Example 7 - Geometric Progressions - Chapter 8 - Predicting What Comes Next: Exploring Sequences & Progress - Maths Class 9

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Example 7 Is 1, 3, 9, 27, 81, โ€ฆ a geometric progression? If so, what is the common ratio? Given sequence 1, 3, 9, 27, 81, โ€ฆ If its GP, then common ratio is same So, we need to show (๐Ÿ^๐’๐’… ๐’•๐’†๐’“๐’Ž)/(๐Ÿ^๐’”๐’• ๐’•๐’†๐’“๐’Ž)=" " (๐Ÿ‘^๐’“๐’… ๐’•๐’†๐’“๐’Ž)/(๐Ÿ^๐’๐’… ๐’•๐’†๐’“๐’Ž) Now, ๐Ÿ‘/๐Ÿ=๐Ÿ‘/๐Ÿ‘ 3 = 3 Since common ratio is same, it is a GP And, Common ratio = r = 3

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