8th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    If the digit 1 is placed after a two digit number whose tens digit is 'f and units digit is 'u?, the new number is

    A)  \[\frac{5}{2}\]           

    B)  \[\frac{a+5}{3a-5}=\frac{a-8}{a+8}\]

    C)  \[2{{(a+b)}^{2}}-9(a+b)-5\]                    

    D) None of these

    Correct Answer: B

    Solution :

    Placing the ?1? as indicated in the problem, shifts the given digits to the left, so that ?t? is now the hundred?s digit and ?u? is now the ten?s digit. \[-\frac{1}{11}\]  \[\frac{3}{11}\]


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