8th Class Mathematics Related to Competitive Exam Question Bank Series

  • question_answer
    5, 12, 7, 15, 8, 18, 10, ?

    A) 28                               

    B) 21

    C) 11                               

    D) 10

    Correct Answer: B

    Solution :

    Second, fourth, sixth numbers are the sum of number on their left and right. Quicker Method: It consists of two alternate series. 5,7,8,10 and 12,15,18 Next term in the second series is 21.


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