Multiple Choice Questions on The common ratio of GP is 4 5and the sum to infinity is 80 9 find the first term ........ for CDS Exam Preparation

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Multiple Choice Questions

The common ratio of GP is 4 5and the sum to infinity is 80 9 find the first term ........

Quantitative Aptitude (CDS) Arithmetic progression
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    The common ratio of GP is -4/5and the sum to infinity is 80/9.find the first term?

     

     

    5
     

    Incorrect Answer

    4

    Incorrect Answer

    16
     

    Correct Answer

    none of these

     

    Incorrect Answer
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    Explanation:

    formula of sum of infinite G.P= a/1-r
    r<1
    80/9 =a/1- (-4/5)
    80/9 =5a /9
    a=16

    By: bhavesh kumar singh
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