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    Question

    Find the wrong number in the given number series.

    7, 78, 324, 900,1855,

    3128
    A 7 Correct Answer Incorrect Answer
    B 324 Correct Answer Incorrect Answer
    C 1855 Correct Answer Incorrect Answer
    D 74 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, The series follows the pattern: (2 × 3) + 1 = 7, (7 × 11) + 1 = 78, (17 × 19)+ 1= 324, (29 × 31) + 1 = 900, (41 × 43) + 1 = 1764, (53 × 59) + 1 = 3128

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