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10th Class Mathematics Real Numbers Question Bank MCQs - Real Number

  • question_answer
    The unit place digit of HCF of \[{{2}^{2}}\times {{3}^{2}}\times {{5}^{3}}\times 7,\,{{2}^{3}}\times {{3}^{3}}\times {{5}^{2}}\times {{7}^{2}}\]and \[3\times 5\times 7\times 11\] is

    A) 70

    B) 105

    C) 175

    D) 225

    Correct Answer: B

    Solution :

    HCF = Product of lowest powers of common factors \[=3\times 5\times 7\] = 105


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