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9th Class Mental Ability Mathematical Operations Question Bank Mathematical Operations

  • question_answer
    If the given signs - and x, and numbers 3 and 6 are interchanged, which one of the following equations would be correct?

    A) \[4\times 3-6=19\]      

    B)        \[6\times 1-3=12\]

    C) \[3-6\times 8=10\]      

    D) \[3\times 6-18=24\]

    E) None of these

    Correct Answer: C

    Solution :

    Explanation Option [c] is correct because. After Interchanging the signs and number the equations will be [a] \[4-6\times 3=14 which is wrong~~~\] [b] \[3-1\times 6=3\,\,whichiswrong\] [c] \[6\times 3-8=10 which is correct~~\] [d] \[6-3\times 18=48 which is wrong\] [e] \[3-5\times 6=27 which is wrong\]        


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