Multiple Choice Questions on If 6x 1 x 7y 1 y 8z 1 z 0 Then what is the value of 1 x 1 y 1 z ........ for NDA Exam Preparation

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    If [(6x-1)/x] +[ (7y-1)/y] + [(8z-1)/z]= 0 Then what is the value of 1/x +1/y + 1/z

    19

    Incorrect Answer

    17

    Incorrect Answer

    21

    Correct Answer

    23

    Incorrect Answer
    Explanation:

    (6x-1)/x + (7y-1)/y + (8z-1)/z= 0
    6-1/x +7-1/y +8-1/z =0
    1/x+1/y+1/z= 21


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