Let A and B be two events such that PA -7-20- PB - 9-20- PA- B-11-20 -then the value of PA- B is equal to

The correct option is D 9/10 From given, we have, P(A∪ B)=1120 P(A)=720 Now, we use formula, P(A̅∪ B)=P(A∪ B)+P(A) =1120+720 =910 ...

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Conditional Probability

Let A and B b...

Question

Let A and B be two events such that $P (A) = 7 / 20, P (B) = 9 / 20, P (A \cup B) = 11 / 20$ ,then the value of $P (¯ A \cup B)$ is equal to

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Solution

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Similar questions

A

B

P (A) = \frac{1}{5}, P (A \cup B) = \frac{7}{10}

P (¯ ¯¯ ¯ B)

A

B

P (A \cap B) = \frac{1}{6}, P (A \cup B) = \frac{31}{45}

P (¯ ¯¯ ¯ B) = \frac{7}{10}

P (B) \neq 1

P (\frac{¯ A}{¯ B})

A

B

P (A) + P (B) = \frac{3}{4}

P (\frac{¯ ¯¯ ¯ A}{B}) = \frac{2}{5}

P (A \cap B)

P (A) = \frac{2}{5}

P (B) = \frac{3}{4}

\frac{1}{20} \leq P (A \cap B) \leq \frac{2}{5}

P (A \cup B) \leq max {P (A), P (B)}

P (A \cap B) \geq min {P (A), P (B)}

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