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  3. 8th Class
  4. Mathematics
  5. Linear Equations in One Variable

8th Class Mathematics Linear Equations in One Variable Question Bank Linear equations in One Variable

  • question_answer
    A 2-digit number is less than 20. The sum of the digits is double that of their product. What is the number?

    A)  12                              

    B)  15                  

    C)  13                  

    D)         11

    Correct Answer: D

    Solution :

    Since, 2 digit number is less then 20 so tens digit =1. Let ones digit of the number be x According to question, we have \[1+x=2(1\times x)\Rightarrow 1+x=2x\Rightarrow x=1\] \[\therefore \] Required numbers 11.


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