What is the sum of all terms of an infinite geometric progression whose first term is 18 and second term is 6?

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KollegeApply · Accepted Answer

The correct option is (A): 27. First term $a = 18$, second term $ar = 6 \implies r = 6/18 = 1/3$. Sum of infinite GP $S = rac{a}{1 - r} = rac{18}{1 - 1/3} = rac{18}{2/3} = 27$.

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