SOLUTION: Find the 20th number of the number pattern; 3, 1, 1/3, 1/9, ...

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Question 1134754: Find the 20th number of the number pattern; 3, 1, 1/3, 1/9, ...
Answer by ikleyn(52780)   (Show Source): You can put this solution on YOUR website!
.
It is a geometric progression with the first term 3 and the common difference of  .


So, the 20th term is    =    = .

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On geometric progressions,  see introductory lessons
    - Geometric progressions
    - The proofs of the formulas for geometric progressions
    - Problems on geometric progressions
    - Word problems on geometric progressions
in this site.

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    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic
"Geometric progressions".

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Free of charge online textbook in ALGEBRA-II
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