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

    Question

    Two schools, A and B participate in a Quiz competition.

    The probability of A’s winning is 3/7 and the probability of B’s winning is 3/5. What is the probability that only one of them wins?
    A 18/35 Correct Answer Incorrect Answer
    B 19/25 Correct Answer Incorrect Answer
    C 16/35 Correct Answer Incorrect Answer
    D 20/29 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let A be the event of School A wins. Let B be the event of School B wins. Then A’ = Event of the School A fails and, B’ = Event of the School B fails Therefore P(A’) = 1 - 3/7 = 4/7 P(B’) = 1 - 3/5 = 2/5 Required Probability = P(A) × P(B’) + P(B) × P(A’) = 3/7 × 2/5 + 3/5 × 4/7 = 6/35 + 12/35 = 18/35

    Practice Next
    More Probability Questions

    Relevant for Exams:

    ask-question