Question

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

    51       53       109       332    

      ?       6686
    A 1344 Correct Answer Incorrect Answer
    B 1385 Correct Answer Incorrect Answer
    C 1335 Correct Answer Incorrect Answer
    D 1360 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    51 x 1 + 2 = 53 53 x 2 + 3 = 109 109 x 3 + 5 = 332 332 x 4 + 7 =  1335 1335 x 5 + 11 = 6686

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