Find the sum of the following geometric progressions:0)2,6, 18,.. to 7 – InterviewSolution

1.	Find the sum of the following geometric progressions:0)2,6, 18,.. to 7 terms(ii) 1, 3, 9, 27, to 8 terms.(iv) (a2 -b2, (a-b),to n terms,a + b
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