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8th Class Mathematics Related to Competitive Exam Question Bank Mathematical Operations

  • question_answer
    It being given that\[+\] denotes \[(10C4)+\], \[(4C4)\]denotes \[84\oplus 72=45;\],  \[63\oplus 41=33,\] denotes \[25\oplus 52=33,\], \[94\oplus 82=?\] denotes \[5\times 9=144;\], \[7\times 8=151:\] denotes 'less than' and x denotes 'greater than', find which of the following is a correct statement:

    A)  \[\div \]

    B)  \[\times \]

    C)  \[+\]

    D)  \[-\]

    Correct Answer: C

    Solution :

        Using proper notations, we have: (a) given statement is \[\Rightarrow \] or\[\frac{11}{2}<2,\] which is not true. (b) given statement is  \[\Delta \]or \[\Rightarrow \], which is not true. (c) given statement is \[\Rightarrow \] or \[1>0,\] which is true. (d) given statement is \[\Rightarrow \]or \[p\Delta q\] which is not true. So, the statement (c) is true.


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