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7th Class Mental Ability Mathematical Reasoning Question Bank Mathematical Reasoning

  • question_answer
    Identify the rule and find the missing number in place of the question mark.
    32 56 70
    45 87 84
    115 180 ?

    A)  130                         

    B)         195

    C)  295                       

    D)         150

    Correct Answer: A

    Solution :

     The rule is that in each row, the difference of first two numbers is doubled i.e., \[(56-21)\times 2=70\]. Hence the required number is \[(180-115)\times 2=130\].


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