CUET · MATHS · PYQ PAPER 2025
If \(A\) and \(B\) are two independent events, then which of the following is/are true?
(A) \(P(A \cap B)=0\)
(B) \(P(A \cup B)=1-P\left(A^{\prime}\right) P\left(B^{\prime}\right)\)
(C) \(P(A \cup B)=P(A) P(B)\)
(D) \(P(A \cap B)=P(A) P(B)\)
Choose the correct answer from the options given below :
- A (B) and (D) only
- B (A) and (C) only
- C (B) only
- D (B) and (C) only
Answer & Solution
Correct Answer
(A) (B) and (D) only
Step-by-step Solution
Detailed explanation
For independent events \(A\) and \(B\): \(P(A \cap B) = P(A)P(B)\). Thus, (D) is true. \(P(A \cup B) = 1 - P((A \cup B)') = 1 - P(A' \cap B') = 1 - P(A')P(B')\). Thus, (B) is true. The correct answer is "(B) and (D) only".
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