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7th Class Mathematics Algebraic Expressions Question Bank Algebraic Expressions

  • question_answer
    The zero of the polynomial \[\frac{4}{7}b-\frac{7}{15}\]is...............

    A) \[\frac{49}{60}\]           

    B)  \[\frac{100}{71}\]          

    C)  70                               

    D)  None of these

    Correct Answer: A

    Solution :

    (a)\[\frac{4}{7}b-\frac{7}{15}=0\Rightarrow \frac{4}{7}b=\frac{7}{15}\Rightarrow b=\frac{7}{15}\times \frac{7}{4}=\frac{49}{60}\]     


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