Question

    Find the wrong number in the given number series.

     16, 19, 28, 44, 76, 140, 268

    A 19 Correct Answer Incorrect Answer
    B 28 Correct Answer Incorrect Answer
    C 268 Correct Answer Incorrect Answer
    D 140 Correct Answer Incorrect Answer
    E 16 Correct Answer Incorrect Answer

    Solution

    ATQ, 16 + 21 = 16 + 2 = 18  (But the number in the series is 19, which means 19 is the wrong number.) 18 + 22 = 18 + 4 = 22 22 + 23 = 22 + 8 = 30 30 + 24 = 30 + 16 = 46 46 + 25 = 46 + 32 = 78 78 + 26 = 78 + 64 = 142 142 + 27 = 142 + 128 = 270 Correct Series: 16, 18, 22, 30, 46, 78, 142, 270 Incorrect Number: 19

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