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    Question

    How many terms are there in the geometric progression 6,

    18, 54, 39366?
    A 12 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 9 Correct Answer Incorrect Answer
    D 8 Correct Answer Incorrect Answer

    Solution

    First term (a) = 6 18 The total ratio (r) ┬а T = arn-1 According to the question, 39366=6├Ч3(n-1) 3n-1 = 6561 3n-1 = 38 (n-1) =8 Therefore n=9

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