| Exam Board | CAIE |
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| Module | P1 (Pure Mathematics 1) |
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| Year | 2021 |
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| Session | June |
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| Topic | Geometric Sequences and Series |
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5 The fifth, sixth and seventh terms of a geometric progression are \(8 k , - 12\) and \(2 k\) respectively. Given that \(k\) is negative, find the sum to infinity of the progression.