8th Class Mental Ability Inserting Missing Number Question Bank Inserting Missing Number

  • question_answer

    A) 21                       

    B)       25

    C) 50                       

    D)       60

    E) None of these

    Correct Answer: B

    Solution :

    Explanation Option [b] is correct. Square of number at the bottom is equal to the product of two numbers at the top. i.e., \[{{6}^{2}}=4~9,\text{ }i.e.\text{ }36\] \[{{12}^{2}}=9~\times 16,\text{ }i.e.\text{ }144\] \[{{20}^{2}}=16\times ?,\text{ }i.e.\,400\] The missing number is \[400~\div 16=25\]

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