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danielle02 Group Title

Is this sequence arithmetic? 1, 3, 9, 27, 81... How will I know if a sequence is arithmetic or not?

  • one year ago
  • one year ago

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  1. ParthKohli Group Title
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    Is \(\rm 2nd ~term - 1st~ term\) equal to \(\rm 3rd~term - 2nd~term\)? If yes, then it's arithmetic.

    • one year ago
  2. mominanisar Group Title
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    it is not arithmetic sequence A sequence is arithmetic if the difference between its any two consecutive terms is same. in your question it could be arithmetic if 3-1=9-3=27-9=81-27 but as they are not equal so it is not arithmetic

    • one year ago
  3. AravindG Group Title
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    infact this is a "Geometric Progression " with common ratio 3

    • one year ago
  4. danielle02 Group Title
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    Ok. Thanks guys! :)

    • one year ago
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