7th Class Mental Ability Mathematical Reasoning Question Bank Mathematical Reasoning

  • question_answer
    If   the   signs   \[\text{ }\!\!'\!\!\text{  }\!\!\div\!\!\text{  }\!\!'\!\!\text{ }\]   and   \[\text{ }\!\!'\!\!\text{ + }\!\!'\!\!\text{ }\]   and   the   digits \[\text{ }\!\!'\!\!\text{ 6 }\!\!'\!\!\text{ }\] and \[\text{ }\!\!'\!\!\text{ 3 }\!\!'\!\!\text{ }\] are interchanged, then which one of the four equations would be correct?

    A) \[\text{3 + 6  }\!\!\div\!\!\text{  2 = 5}\]

    B)         \[\text{6  }\!\!\div\!\!\text{  3 + 2 = 8}\]

    C) \[\text{3 + 6  }\!\!\div\!\!\text{  5 = 7}\]  

    D)         \[\text{3  }\!\!\div\!\!\text{  6 + 1 = 6}\]

    Correct Answer: C

    Solution :

     On interchanging \[\div ,\]and + and 6 and 3 in , we get the equation as \[6\div 3+5=7\] or \[2+5=7\] which is true.


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