engineering mathematics MCQ #4018

If the probability of event A is 1 / 3 and the probability of event B is 1 / 4, then P(A ∪ B) = ? (A and B are independent)

engineering mathematics MCQ #4018

  1. Question 1

    Q1. If the probability of event A is 1 / 3 and the probability of event B is 1 / 4, then P(A ∪ B) = ? (A and B are independent)

    • A) 1 / 3 + 1 / 4
    • B) 1 / 3 + 1 / 4 - 1 / 12
    • C) 1 / 3 + 1 / 4 + 1 / 12
    • D) 1 / 3 * 1 / 4

    Answer: 1 / 3 + 1 / 4 - 1 / 12

    Explanation: For independent events, P(A ∪ B) = P(A) + P(B) - P(A) * P(B) = 1 / 3 + 1 / 4 - (1 / 3) * (1 / 4).