Quizzes: independent events

Question: If the probability of using Facebook is 0.6 and the probability of using Instagram is 0.5, and these events are independent, what is the probability of using both Facebook and Instagram?
Options:
A) 0.3
B) 0.9
C) 0.5
D) 0.6

Show answer

Answer: A) 0.3
explaination: 0.6 x 0.5 = 0.3

    Question: If the probability of a basketball team winning a game is 0.6 and the probability of a soccer team winning a game on the same day is 0.5, and these events are independent, what is the probability that both teams win?
    A) 0.3
    B) 0.1
    C) 0.5
    D) 0.6

    Show answer

    Answer: A) 0.3

    Question: If the probability of passing the math exam is 0.7 and the probability of passing the English exam is 0.8, and these events are independent, what is the probability of passing both exams?
    A) 0.5
    B) 0.56
    C) 0.7
    D) 0.8

    Show answer

    Answer: B) 0.56

    Question: If the probability of an investment in stock A yielding a profit is 0.6 and in stock B yielding a profit is 0.5, and these events are independent, what is the probability of both investments yielding a profit?
    A) 0.3
    B) 0.1
    C) 0.6
    D) 0.5

    Show answer

    Answer: A) 0.3


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