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

    Question

    If 2 pens are drawn at random what is the probability

    that none of them is blue? A basket contains 3 blue, 5black and 3 red pens.
    A 21/55 Correct Answer Incorrect Answer
    B 3/55 Correct Answer Incorrect Answer
    C 28/55 Correct Answer Incorrect Answer
    D 8/33 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let S be the sample space. Then, N(S) = number of ways of drawing 2 pens out of 11 = ¹¹C₂ = (11 ×10 )/(2 ×1) = 55 Let E = event of getting none of them is blue. n(E) = ⁸C₂ = (8 ×7 )/(2 ×1) = 28 n(P) = (n(E))/(n(S)) = 28/55

    Practice Next
    More Probability Questions

    Relevant for Exams:

    ask-question