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1.4.9 Geometric sequences and series (A-level only)

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Question 13

The fifth term of a geometric series is 12 and the eighth term of the series is 96.

a.

Find the common ratio.

[2]
b.

Find the first term of the series.

[2]
c.

The sum of the first 20 terms, giving your answer to the nearest whole number.

[2]

1.4.9 Geometric sequences and series (A-level only) Questions

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