Home
Class 11
MATHS
If A and B are two independent events su...

If A and B are two independent events such that `P(overline(A))=(7)/(10), P(overline(B))=alpha " and" P(A cup B)=(8)/(10)`, then `alpha`, is

A

`2/7`

B

`5/7`

C

1

D

`2/5`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|239 Videos

  • CIRCLE AND CONICS

    MARVEL PUBLICATION|Exercise MISCELLANEOUS MCQs|50 Videos

  • PROBABILITY DISTRIBUTIONS

    MARVEL PUBLICATION|Exercise MCQs|51 Videos

Similar Questions

Explore conceptually related problems

If A and B are two independent events such that P(overline(A) cap B)=2//15 " and " P(A cap overline(B))=1//6 , then P(B), is

If A and B are two independent events such that P(B)=(2)/(7),,P(A uu B)=0.8 then P(A)=

A and B are two independent events such that P(A)=(1)/(5), P(A cup B)=(7)/(10). " Then ", P(overline(B)) =

If A and B are two independent events such that P(A) = 7/10 , P(B')=alpha , P(AcupB) = 8/10 , then alpha =

If P(A)=(1)/(4), P(overline(B))=(1)/(2) " and " P(A cup B)=(5)/(9) , then P(A//B) is

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

MARVEL PUBLICATION-PROBABILITY-MULTIPLE CHOICE QUESTIONS
  1. There are 4 envelopes corresponding to 4 letters. If the letters are p...

    Text Solution

    |

  2. If A and B are mutually exclusive events in a sample space S, then

    Text Solution

    |

  3. If A and B are two independent events such that P(overline(A))=(7)/(10...

    Text Solution

    |

  4. If A and B are independent events such that P(A ) = 0.30 and P(B) = 0....

    Text Solution

    |

  5. 7 white balls and 3 black balls are kept randomly in order. Find the p...

    Text Solution

    |

  6. A fair coin is tossed repeatedly. If tail appears on first four tosses...

    Text Solution

    |

  7. Five horses are in race. Mr. X selected two of horses at random and b...

    Text Solution

    |

  8. Two dice are rolled once. Find the probability of getting such number...

    Text Solution

    |

  9. If A and B are independent events such that P(Acap B) = 3/25 and P(A'c...

    Text Solution

    |

  10. Out of 30 consecutive integers 2 are choosen at random. Find the proba...

    Text Solution

    |

  11. Three integers are chosen at random from the first 20 integers. The...

    Text Solution

    |

  12. A bag contains 16 coins of which two are counterfeit with heads on bot...

    Text Solution

    |

  13. Conditional probability P(B//A) is defined only when a

    Text Solution

    |

  14. Conditional probability P(A//B') is defined only when

    Text Solution

    |

  15. Following are the wages of 8 workers in rupees: 50, 62, 40, 70, 45, 56...

    Text Solution

    |

  16. For two events A and B, P (B) = 0.3, P (A but not B) = 0.4 and P (not ...

    Text Solution

    |

  17. If P(overline A cup B) = 5/6, P(A) = 1/2 and P(overlineB) = 2/3," then...

    Text Solution

    |

  18. If P(A) = a, P(B) = b and P(A cap B) = c," then : " P(overlineA cap ov...

    Text Solution

    |

  19. For three events A,B,C the probability that only A occur is (A) P(A...

    Text Solution

    |

  20. If 2 coins are tossed, probability that the second coin would show a t...

    Text Solution

    |