Home
Class 12
MATHS
If A and B are independent events such t...

If A and B are independent events such that P(B) = 2/7, `P(A cup bar B) = 0.8, then P(A) =

A

0.1

B

0.2

C

0.3

D

0.4

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • PERMUTATION AND COMBINATIONS

    HIMALAYA PUBLICATION|Exercise Question Bank|104 Videos

  • PROGRESSIONS

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|97 Videos

Similar Questions

Explore conceptually related problems

If A and B are independent events such that P(A) gt 0, P(B) gt 0 , then

If A and B are events such that P(A/B)=P(B/A) , then

If A and B are independent events such that 0 < P(A) < 1 and 0 < P(B) < 1, then which of the following is not correct?

If A and B are two events such that P(A) = 1/2, P(B) = 1/3, P(A|B) = 1/4, then P(A^(') cap B^(')) =

If events A and B are independent, then P(A cap B) =

If A and B are two events such that P(A cup B) = 5/6 , P(A cap B) = 1/3 , P(A) = 2/3, then A and B are

A and B are two events such that P(A)!=0, P(B//A) is

If A and B are independent events such that 0 lt P (A) lt 1 and 0 lt P(B) lt 1 , then which of the following is not correct ?

If A and B are two events such that P(A cup B) =3/4 ,P(A cap B) = 1/4 and P(bar(A)) =2/3 then P( bar(A) capB) is equal to

HIMALAYA PUBLICATION-PROBABILITY-QUESTION BANK
  1. An urn contains nine balls of which three are red , four are blue and ...

    Text Solution

    |

  2. The probability that a isumtilci sefected at random from the set of nu...

    Text Solution

    |

  3. If A and B are independent events such that P(B) = 2/7, P(A cup bar B)...

    Text Solution

    |

  4. Four numbers are chosen at random from {1,2,3, …..40} The probubility ...

    Text Solution

    |

  5. The probability distribution of a random variable X is given by The va...

    Text Solution

    |

  6. Two aeroplanes I and II bomb a target in succession . The probabilitie...

    Text Solution

    |

  7. If the probability distribution of a random variable X is as given bel...

    Text Solution

    |

  8. If A and B are independent events of a random experiment such that P(A...

    Text Solution

    |

  9. Let S he the sample space associated with the random experiment of thr...

    Text Solution

    |

  10. If the probability distribution of a random variable X is as given bel...

    Text Solution

    |

  11. The sum of the mean and variance of a binomial distribution is 15 and ...

    Text Solution

    |

  12. India plays two matches each with West Indies and Australia. In any ma...

    Text Solution

    |

  13. If A and B are independent events such that P(A) gt 0, P(B) gt 0, then

    Text Solution

    |

  14. If random variable X has the following probability distribution then t...

    Text Solution

    |

  15. In an entrance examination there are multiple dioice questions. Ihere ...

    Text Solution

    |

  16. The numbers are chosen from 1 to 30 . The probability that they are no...

    Text Solution

    |

  17. Choose the correct answer: In a box containing 100 bulbs, 10 are def...

    Text Solution

    |

  18. In a binomial distribution n =4, P(X = 0) = 16/81 then P(X=4) equals

    Text Solution

    |

  19. A rifleman is firing at a distant target and has only 10 % chance of h...

    Text Solution

    |

  20. If A and B are arbitrary events then

    Text Solution

    |