8th Class Mathematics Exponents and Power Question Bank Exponents and Powers

  • question_answer
    Which is greater of \[{{2}^{12}}\] and\[{{3}^{8}}\]?

    A)  \[{{3}^{8}}\]

    B)  \[{{2}^{12}}\]

    C)   Both are equal.

    D)  Cannot be compared.

    Correct Answer: A

    Solution :

    \[{{2}^{12}}={{2}^{3\times 4}}={{({{2}^{3}})}^{4}}={{8}^{4}}\] \[{{3}^{8}}={{3}^{2\times 4}}={{({{3}^{2}})}^{4}}={{9}^{4}}\] Since the powers of \[{{8}^{4}}\] and \[{{9}^{4}}\] are the same, \[{{9}^{4}}\] is greater than \[{{8}^{4}}\Rightarrow \,\,{{3}^{8}}>{{2}^{12}}\].


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