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7th Class Mental Ability Mathematical Operations Question Bank Mathematical Operations

  • question_answer
    Which one of the following interchanges in signs and numbers would make the equation true? \[3+5-2=4\]

    A) (a)\[+\text{ }and\text{ }-,\text{ }2\text{ }and\text{ }5\]

    B) (b)\[+\text{ }and\text{ }-,\text{ }3\text{ }and\text{ }5\]

    C) (c)\[+\text{ }and\text{ }-,\text{ }2\text{ }and\text{ }3\]   

    D) (d) None of these

    Correct Answer: B

    Solution :

    (b) : On interchanging \[\left( +\text{ }and\text{ }- \right)\]and (3 and 5), \[3+5-2\]becomes \[5-3+2=4\]


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