A-LevelMathematicsSeriesMay/June 2014Paper 1 Q67 Marks
The 1st, 2nd and 3rd terms of a geometric progression are the 1st, 9th and 21st terms respectively of an arithmetic progression. The 1st term of each progression is 8 and the common ratio of the geometric progression is r, where r ≠ 1. Find
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