TMUA 2019 Paper 1 Q5 — Worked Solution

P1·Sequences & Series·5.5Official · 2019 · Q5

geometric-seriescommon-rationth-term

S

is a geometric sequence. The sum of the first 6 terms of

S

is equal to 9 times the sum of the first 3 terms of

S

. The 7th term of

S

is 360. Find the 1st term of

S

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