6th Class Mental Ability Series Completion Question Bank Series Completion and Inserting The Missing Character

  • question_answer
    Direction: In each of the following questions choose the missing number to complete the series.
    1, 3, 6, 10,  ?

    A)  12                               

    B)  15    

    C)  18                               

    D)  21

    Correct Answer: B

    Solution :

                              : The numbers are 1 + 2,1 + 2 + 3,1 +2+3+4, 1+2+3+4+5      i.e., 1,3,6,10,15 

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