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7th Class Mathematics Related to Competitive Exam Question Bank Missing Character

  • question_answer
    Directions: In each of the following questions, a matrix of certain characters is given. These characters follows a certain trend, row-wise or column- wise. Find out this trend and choose the missing character from the given alternatives.

    A) 9                                 

    B) 10

    C) 12                               

    D) 15

    Correct Answer: D

    Solution :

    In the first column, \[\left( 5+8+7 \right)\div 4=5.\] In the second column, \[\left( 9+6+13 \right)\div 4=7.\] In the fourth column, \[\left( 7+10+19 \right)\div 4=9.\] Let the missing number be x. Then, in the third column, we have: \[\left( 8+9+x \right)\div 4=8\Rightarrow \] \[17+x=32\Rightarrow x=15.\]


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