The first four terms in an infinite geometric series are 216, 72, 24, 8. a. What is

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The first four terms in an infinite geometric series are 216, 72, 24, 8.

a. What is the common ratio r?

b. Write down an expression for the nth term of the series.

c. Find the sum of the first n terms of the series.

d. Find the sum to infinity.

e. How many terms are needed for the sum to be greater than 323.999?

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Cambridge IGCSE And O Level Additional Mathematics

ISBN: 9781510421646

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Authors: Val Hanrahan, Jeanette Powell

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Question Posted: Sep 03, 2021 01:47 AM

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The first four terms in an infinite geometric series are 216, 72, 24, 8. a. What is

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a To find the common ratio r we can divide the second term by the first term the th...View the full answer

Cambridge IGCSE And O Level Additional Mathematics

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