Answer: 1/2.
- A 1/4
- B 1/2
- C 1/13
- D 1/26
Correct answer: B. 1/2
Explanation: 26 red cards (hearts + diamonds). P(red) = 26/52 = 1/2.
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