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

  • question_answer
    If P denotes +, Q denotes -, R denotes \[\Rightarrow \]and S denotes\[\Delta \], which of the following statements is correct?

    A) 36 R 4 S 8 Q 7 P 4 = 10

    B) 16 R 12 P 49 S 7 Q 9 = 200

    C) 32 S 8 R 9 = 160 Q 12 R 12

    D) 8 R 8 P 8 S 8 Q 8 = 57

    Correct Answer: D

    Solution :

        Using the proper notations in (d), we get \[8\times 8+8\div 8-8=8\times 8+1-8=64+1-8=57\]


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