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    Question

    If 54 [9] 3 and 108 [30] 5, then what is the value of Z

    in 19 [Z] 18?
    A 18 Correct Answer Incorrect Answer
    B 19 Correct Answer Incorrect Answer
    C 36 Correct Answer Incorrect Answer
    D 72 Correct Answer Incorrect Answer

    Solution

    The pattern is that the number in the middle is obtained by multiplying the numbers on each sides and then dividing the result by ā€˜18’. Ā  Hence, the correct answer is (B).

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