Multiple Choice Questions on P and J are two number whose A M is 25 and G M is 7 Which of the following may be the value of P nbs........... for CDS Exam Preparation

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Multiple Choice Questions

P and J are two number whose A M is 25 and G M is 7 Which of the following may be the value of P nbs...........

Quantitative Aptitude (CDS) Arithmetic progression
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    P and J are two number whose A.M is 25 and G.M is 7. Which of the following may be the value of P?

     

    50
     

    Incorrect Answer

    49
     

    Correct Answer

    48
     

    Incorrect Answer

    none of these

     

    Incorrect Answer
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    Explanation:

    A.M= P+J /2
    25 =P+J /2
    P+J=50...... equation1
    G.M=√PJ
    7=√PJ
    49=PJ
    (P-J)^2=(P+J)^2-4PJ
    =2500-196
    =2304
    P-J=48 ... equation2
    solving equation 1 and 2
    P=49

    By: bhavesh kumar singh
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