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7th Class Mental Ability Mathematical Reasoning Question Bank Mathematical Reasoning

  • question_answer
    Which two signs are to be interchanged to make the equation below true? \[\text{3 - 9  }\!\!\times\!\!\text{  27 + 9 - 3 = 15}\]

    A)  \[\text{+}\]and \[-\]                     

    B)  \[\times \] and \[+\]  

    C)  \[\times \]and \[\div \]               

    D)         \[-\]and \[\div \]  

    Correct Answer: D

    Solution :

     If we interchange -and-, the equation changes into \[3\div 9\times 27+9-3=9+9-3=18-3=15\]. Hence option [d] is the correct answer.


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