Question

    Which of the following numbers will replace the question

    mark (?) in the given series? 15, 15, 17, 51, 55, ?
    A 275 Correct Answer Incorrect Answer
    B 110 Correct Answer Incorrect Answer
    C 255 Correct Answer Incorrect Answer
    D 165 Correct Answer Incorrect Answer

    Solution

    15 x 1 = 15 15 + 2 = 17 17 x 3 = 51 51 + 4 = 55 55 x 5 = 275

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