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10th Class Mathematics Real Numbers Question Bank Real Number

  • question_answer
    For what value of 'x' does \[{{\mathbf{3}}^{\mathbf{x}}}\] end with 5?

    A)  0                                

    B)  5             

    C)  500                             

    D)  Never ends with 5

    Correct Answer: D

    Solution :

    (d): \[{{3}^{x}}\]always ands with 3, 9, 7. 1. Try it with some TRIVIAL Values of x e.g. x= 1, 2, 3, 4, 5


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