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

  • question_answer
    If \[\text{+ and  }\!\!\times\!\!\text{ ,4 and 6}\]and\[\text{+ and  }\!\!\times\!\!\text{ ,4 and 6}\] it necessarily follows that

    A)  \[4+12=16\]             

    B)  \[\text{a }\square \text{ c  }\!\!\theta\!\!\text{  b}\]

    C)  \[b\times \text{a}\square c\]   

    D)  \[b\times \text{a}\square c\]

    Correct Answer: D

    Solution :

        \[=\frac{4}{3}-4\times 3+4\] \[=\frac{4}{3}-12+4=-\frac{20}{3}\] \[=18\times 14+6-16\div 4\] \[=18\times 14+6-4=254\] \[-\] \[\div \] \[\frac{5}{9}\] \[=15\div 3+24-12\times 2\] \[=5+24-24=5\]


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