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If the fourth, seventh and sixteenth terms of an AP are in geometric progression, the first six terms of the AP have a sum of 12, find the common difference of the AP and the common ratio of the GP.
I've been assuming that the fourth, seventh and sixteenth terms of the AP are the fourth, seventh and sixteenth of the GP, which isn't the case.
How do I start?
I've been assuming that the fourth, seventh and sixteenth terms of the AP are the fourth, seventh and sixteenth of the GP, which isn't the case.
How do I start?