7th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    The value of \[{{\left( \frac{-2}{3} \right)}^{7}}\]is

    A) negative        

    B) 0

    C) positive           

    D) none of these

    Correct Answer: A

    Solution :

     \[{{(-a)}^{n}}=\left\{ \begin{align}   & \text{Positive, if n is even} \\  & \text{negative, if n is odd} \\ \end{align} \right.\] Here n is odd, so the value will negative         


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