Question

    Which letter number cluster will replace the question mark (?) to complete the given series?

    C12, F15, I60, L65, O390, [?]

    A R390 Correct Answer Incorrect Answer
    B R352 Correct Answer Incorrect Answer
    C V392 Correct Answer Incorrect Answer
    D W422 Correct Answer Incorrect Answer

    Solution

    C + 3 = F, F + 3 = I, I + 3 = L, L + 3 = O, O + 3 = R For number, 12 + 3 = 15, 15 x 4 = 60, 60 + 5 = 65, 65 x 6 = 390

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