Zadanie 3
A geometric sequence begins with 80 and has fourth term 121.67. Let Sₙ be the sum of its first n terms. Find the least positive integer n for which Sₙ>12000.
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A geometric sequence begins with 80 and has fourth term 121.67. Let Sₙ be the sum of its first n terms. Find the least positive integer n for which Sₙ>12000.
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