Question

    What will come in place of question mark (?) in the following number series?

    18      19      34      111       428       2165       ?

    A 11945 Correct Answer Incorrect Answer
    B 12896 Correct Answer Incorrect Answer
    C 13026 Correct Answer Incorrect Answer
    D 12954 Correct Answer Incorrect Answer

    Solution

    × 1 + 1², × 2 - 2², × 3 + 3², × 4 - 4², × 5 + 5², × 6 - 6²

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