SOLUTION: number sequences start with 3 and multiply by 3 each time, How do you find the 20th term there must be an easy way without having to count all the way up.

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Question 222061: number sequences
start with 3 and multiply by 3 each time, How do you find the 20th term there must be an easy way without having to count all the way up.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


For a geometric series with an initial value of and a common ratio of (), the sum of the first terms is given by:



Just plug in , , and and do your arithmetic.

John