Answer: 3/7.
- A 3/7
- B 4/7
- C 3/4
- D 1/2
Correct answer: A. 3/7
Explanation: Total = 7. P(red) = 3/7.
Venn diagram of the universal set U with events A and B, showing the intersection (A and B), the parts unique to each event, and the complement region outside both.
Concept context
Chance, events, conditional probability, and Bayes theorem