## If the sum of n terms of a G.P series is 225, the common ratio is 2 and the last term (nth term) is 128.

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## Answers ( )

Answer:Step-by-step explanation:what is the finance charge?

Answer:n = 8.Step-by-step explanation:I am assuming that the sum is 255.

The last term is 128 and the common ratio is 2 so we can work backwards until we reach a sum of 255.

Term n = 128 so the previous term must be 128/2 = 64.

So following this pattern we have:

128 + 64 + 32 + 16 + 8 + 4 + 2 + 1 = 255.

So we see that n = 8.