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    Question

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

    following series? 20, 21, 30, 55, 104, 185, ?
    A 326 Correct Answer Incorrect Answer
    B 316 Correct Answer Incorrect Answer
    C 306 Correct Answer Incorrect Answer
    D 300 Correct Answer Incorrect Answer
    E 346 Correct Answer Incorrect Answer

    Solution

    20 + 12 = 21 21 + 32 = 30 30 + 52 = 55 55 + 72 = 104 104 + 92 = 185 185 + 112 = 306

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