📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    ⚡ Azaadi sale - Celebrate Independence Day with Flat 55% Off On all courses! 13 to 17 Aug ⚡ Enroll Now

    Question

    5 11 23 43 85 171

    341 Find the wrong number in the following number series:
    A 23 Correct Answer Incorrect Answer
    B 85 Correct Answer Incorrect Answer
    C 171 Correct Answer Incorrect Answer
    D 341 Correct Answer Incorrect Answer
    E 11 Correct Answer Incorrect Answer

    Solution

    5 × 2 + 1 = 11
    11 × 2 - 1 = 21
    21 × 2 + 1 = 43
    43 × 2 - 1 = 85
    85 × 2 + 1 = 171
    171 × 2 - 1 = 341

    Practice Next

    Relevant for Exams:

    ask-question

    Not sure which exam is best for you Talk to our expert

    Get My Free Call