Question

    Which of the following numbers will replace the question

    mark (?) in the given series? 12, [?],45, 169, 511, 1841
    A 23 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 25 Correct Answer Incorrect Answer
    D 19 Correct Answer Incorrect Answer

    Solution

    12 + 2³ - 1 = 19 19 + 3³ - 1 = 45 45 + 5³ - 1 = 169 169 + 7³ - 1 = 511 511 + 11³ - 1 = 1841

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