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


    Question

    If a = 0.121212… (repeating) and b = √5, state

    whether each is rational or irrational.
    A a is rational and b is irrational Correct Answer Incorrect Answer
    B a is irrational and b is rational Correct Answer Incorrect Answer
    C Both a and b is rational Correct Answer Incorrect Answer
    D Both a and b is irrational Correct Answer Incorrect Answer

    Solution

    a = 0.121212… is a repeating decimal ⇒ it can be expressed as a fraction ⇒ rational number. b = √5 cannot be expressed as a ratio of two integers ⇒ irrational number. Answer: a is rational, b is irrational.

    Practice Next

    Relevant for Exams:

    ask-question