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SSC Sample Paper SSC CGL - Sample Paper-20

  • question_answer
    Direction: A series is given with one/two term missing. Choose the correct alternative from the given ones that will complete the series.
    2, 7, 27, 107, 427, ?

    A) 1262                

    B) 1707

    C) 4027                            

    D) 4207

    Correct Answer: B

    Solution :

    The pattern is \[+\,5,\] \[+\,20,\] \[+\,80,\] \[+\,320,...\text{ }i.e.,\] \[(5\times {{1}^{2}}),\]\[(5\times {{2}^{2}}),\] \[(5\times {{4}^{2}}),\] \[(5\times {{8}^{2}}),...\] So, missing term \[=427+(5\times {{16}^{2}})=427+1280+1707\]


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