10th Class Mental Ability Series Completion Question Bank Series Completion

  • question_answer
    Find the missing numbers. 2, 6, 12, 20, 30, 42,......

    A)  60                         

    B)         58

    C)  56                           

    D)         44

    Correct Answer: C

    Solution :

     The sequence is \[1\times 2,\,2\times 3,\,3\times 4,\,4\times 5,\,5\times 6,\,6\times 7,......\] \[\therefore \]Missing number \[=7\times 8=56.\]


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