New RBI Grade B 2025 Notification will come Soon! Enroll Here

    Question

    Find the wrong number in the given number series.

    21, 31, 11, 41, 1, 61
    A 61 Correct Answer Incorrect Answer
    B 21 Correct Answer Incorrect Answer
    C 1 Correct Answer Incorrect Answer
    D 31 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    21 + 10 × 1 = 31

    31 – 10 × 2 = 11

    11 + 10 × 3 = 41

    41 – 10 × 4 = 1

    1 + 10 × 5 = 51

    So, 51 should come in place of 61.

    Practice Next

    Relevant for Exams: