10th Class Mental Ability Numbers Question Bank Inserting Numbers

  • question_answer
    Find the number which replaces the question mark.

    A)  678       

    B)  769

    C)  824                       

    D)         937

    Correct Answer: A

    Solution :

                                    In the first figure, \[\text{5}=\left( \text{5}\times \text{1} \right),\text{8}=\left( \text{4}\times \text{2} \right),\text{4}=\left( \text{2}\times \text{2} \right).\] In the second figure,  \[\text{6}=\left( \text{3}\times \text{2} \right),\text{9}=\left( \text{3}\times \text{3} \right),\text{4}=\left( \text{2}\times \text{2} \right).\] So, the digits of the missing figure are \[\left( \text{6}\times \text{1} \right),\left( \text{7}\times \text{1} \right),\left( \text{4}\times \text{2} \right)\] i.e., \[\text{6},\text{7},\text{8}.\]


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