SOLUTION: can i know the formula in order to solve this problem. 1,2,4,8... how to get the next term using geometric sequence. thank you!

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Question 407431: can i know the formula in order to solve this problem. 1,2,4,8... how to get the next term using geometric sequence. thank you!
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

 Geomtric Sequence {1,2,4,8...} r = 2

  a%5Bn%5D+=+a%5B1%5D%2Ar%5E%28n-1%29

    a%5Bn%5D+=+1%2A2%5E%28n-1%29

    a%5B5%5D+=+1%2A2%5E%284%29=+16