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    Question

    Which of the following terms will replace the question

    mark (?) in the given series to make it logically complete? UCK-4, WFO-9, YIS-19, ALW-39, ?
    A COA-79 Correct Answer Incorrect Answer
    B BOA-76 Correct Answer Incorrect Answer
    C COA-77 Correct Answer Incorrect Answer
    D CPB-79 Correct Answer Incorrect Answer

    Solution

    U + 2 = W, W + 2 = Y, Y + 2 = A, A + 2 = C C + 3 = F, F + 3 = I, I + 3 = L, L + 3 = O 4 + 5 = 9, 9 + 10 = 19, 19 + 20 = 39, 39 + 40 = 79.

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