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JEE Main & Advanced Mathematics Sequence & Series Question Bank Geometric Progression

  • question_answer
    The sum of first two terms of a G.P. is 1 and every term of this series is twice of its previous term, then the first term will be [RPET 1988]

    A) 1/4

    B) 1/3

    C) 2/3

    D) 3/4

    Correct Answer: B

    Solution :

    Given \[a+ar+1\] and \[r=2\] therefore \[a+2a=1\] \[\Rightarrow \]\[a=\frac{1}{3}\].


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