6th Class Mathematics Related to Competitive Exam Question Bank Series

  • question_answer
    DIRECTIONS: In each of the following questions, a sequence or groups of letters and numbers is given with one term missing as shown by(?). Choose the missing term out of the given alternatives. 5, 9, 21, 37, 81........

    A) 153                 

    B)          150

    C) 158                 

    D)          151

    Correct Answer: A

    Solution :

        The sequence is \[\times 2-1,\,\,\times 2+3,\,\times 2-5,\,\times 2+7,\,\times 2-9\] etc. The next number is 81 x 2-9= 153.


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