Question

    Find the missing term in the series given below.

    7DU, 11IQ, ____, 19SI
    A 13MN Correct Answer Incorrect Answer
    B 15NM Correct Answer Incorrect Answer
    C 16PO Correct Answer Incorrect Answer
    D 17SP Correct Answer Incorrect Answer

    Solution

    The number moves ahead by 4 places in each term = 7, 7+4 = 11, 11+4 = 15, 15+4 = 19 The middle value moves ahead by 5 places in each term = D, D+5 = I, I+5 = N, N+5 = S The third value moves back by 4 places in each term = U, U-4 = Q, Q-4 = M, M-4 = I   Thus, the missing term would be 15NM. Hence, the correct answer is (B).

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