Question: The first term of a geometric sequence is a, and the common ratio, r, is positive. (1) 10a calculate the value of r. 6.

The first term of a geometric sequence is a, and the common

The first term of a geometric sequence is a, and the common ratio, r, is positive. (1) 10a calculate the value of r. 6. Given that the sum of the second and third terms is (ii) Given also that the sum of the first 4 terms is 65, calculate the value of a and hence calculate the sum to infinity of the series.

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