2. Questions Bank
  3. 8th Class
  4. Mental Ability
  5. Series Completion

8th Class Mental Ability Series Completion Question Bank Series Completion and Inserting The Missing Character

  • question_answer
    Direction: In each of the following questions, a series is given. A term of this series is wrong. Identify the wrong term.
    1, 3, 7, 15, 27, 63, 127

    A) 7                           

    B) 15             

    C) 27                          

    D) 63

    Correct Answer: C

    Solution :

    : The pattern is +2, +4, +8,...., so series should be1, 3, 7, 15, 31, 63, 127 Clearly, 27 is the wrong term. It must be replaced by 31.


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