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    Question

    Four number-pairs are given, out of which three are

    alike in certain manner and one is different. Choose the different number-pair.
    A 123: 492 Correct Answer Incorrect Answer
    B 312: 1560 Correct Answer Incorrect Answer
    C 234: 1208 Correct Answer Incorrect Answer
    D 411: 2055 Correct Answer Incorrect Answer

    Solution

    The pattern followed here is: The sum of 1st and 3rd digits of the 1st number is multiplied by the 1st number to get the 2nd number. 123: 492 тЖТ 123 x (1 + 3) = 123 x 4 = 492 312: 1560 тЖТ 312 x (3 + 2) = 312 x 5 = 1560 411: 2055 тЖТ 411 x (4 + 1) = 411 x 5] = 2055 All combination of number follows this pattern except for: 234: 1208 тЖТ 234 x (2 + 4) = 234 x 6] = 1404.

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