SOLUTION: What is the next three series of numbers in 6400, 3200, 1600, 800 and why? Are they arithmetic or geometric?

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Question 943639: What is the next three series of numbers in 6400, 3200, 1600, 800 and why? Are they arithmetic or geometric?

Found 2 solutions by rfer, MathTherapy:
Answer by rfer(16322)   (Show Source): You can put this solution on YOUR website!
Cut in half in each step.
800, 400, 200, 100
Arithmetic

Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

What is the next three series of numbers in 6400, 3200, 1600, 800 and why? Are they arithmetic or geometric?
This is a GP (Geometric progression)
r, or common ratio is:
Notice that:

,
and so on!!
Do you think you can now find your terms?
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