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7th Class Mathematics Exponents and Power Question Bank Exponents and Power

  • question_answer
    \[{{5}^{3}}+{{5}^{3}}+{{5}^{3}}+{{5}^{3}}+{{5}^{3}}\]is equal to

    A) \[{{5}^{4}}\]                          

    B) \[{{55555}^{3}}\]

    C) \[{{5}^{5}}\]                                      

    D)  None of these

    Correct Answer: A

    Solution :

    (a) \[{{5}^{3}}+{{5}^{3}}+........\] five times \[=5\times {{5}^{3}}={{5}^{1}}\times {{5}^{3}}={{5}^{1+3}}={{5}^{4}}\]


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