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  3. 12th Class
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12th Class Mathematics Sample Paper Mathematics Olympiad Sample Paper-2

  • question_answer
    If a, b, c are non-zero real numbers, then  vanishes when

    A)  \[\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=0\]

    B)  \[\frac{1}{a}-\frac{1}{b}-\frac{1}{c}=0\]

    C)  \[\frac{1}{b}-\frac{1}{c}-\frac{1}{a}=0\]

    D)  \[\frac{1}{b}-\frac{1}{c}+\frac{1}{a}=0\]

    Correct Answer: A

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