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    Question

    If 22 @ 18 = 18' and '42 @ 22 = 15', then 18 @ 23 = ?'.

    What will come in place of question mark? 
    A 9 Correct Answer Incorrect Answer
    B 14 Correct Answer Incorrect Answer
    C 6 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer

    Solution

    22 x 18 = 396; 3 + 9 + 6 = 18 42 x 22 = 924; 9 + 2 + 4 = 15 18 x 23 = 414; 4 + 1 + 4 = 9

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