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    Question

    If 236 = 33, 487 = 57, 6391 = 57, then 851 =

    ?
    A 45 Correct Answer Incorrect Answer
    B 36 Correct Answer Incorrect Answer
    C 42 Correct Answer Incorrect Answer
    D 48 Correct Answer Incorrect Answer

    Solution

    The logic followed here is as follows: The sum of all the digits of the number, and then the sum is multiplied by '3'. For 236 = 33: 2 + 3 + 6 = 11×3 = 33 For 487 = 57: 4 + 8 + 7 = 19 × 3 = 57 For 6391 = 57: 6 + 3 + 9 + 1=19 × 3 = 57 Similarly, for 851 = ?: 8 + 5 + 1 = 14 × 3 = 42

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