Home
Class 12
MATHS
If A,B are two events, then show that ...

If A,B are two events, then show that
`P((A)/(B))P(B)+P((A)/(B^(C)))P(B^(C))=P(A).`

Text Solution

Verified by Experts

The correct Answer is:
`=P(A).`
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise DAM SURE|13 Videos
  • PROBABILITY

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise EXERCISE-9(b)|24 Videos
  • PERMUTATIONS AND COMBINATIONS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise TAXTUAL EXERCISES|73 Videos
  • QUADRATIC EXPRESSIONS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise TEXTUAL EXERCISES|68 Videos

Similar Questions

Explore conceptually related problems

If A, B are two events, then show that (i) P((A)/(B))P(B)+P((A)/(B^(C )))P(B^(C ))=P(A) (ii) P(A^(c )|B^(c ))=(1-P(AuuB))/(1-P(B)),P(A) gt 0, P(B) ne 1 (iii) P(A//B^(C ))=(P(A)-P(AnnB))/(-P(B)),P(B^(C )) gt 0

For any two events A,B shows that P(AcapB)-P(A)P(B)=P(A^(C))P(B)-P(A^(C)capB) =P(A)P(B^(C))-P(AcapB^(C))

If A and B are two events then show that (i) (P(AnnB^(c)))=P(A)-P(AnnB) (ii) The probability that exactly one of them occurs is given by P(A)+P(B)-2P(AnnB)

If A and B are two events such that P(A)=(1)/(2) and P(B)=(2)/(3) then

If A and B are two events of a sample space then P(A)-P(B)=

If A and B are two events such that P(A) =(1)/(4), P(B) = (1)/(2) and P(A cap B) = (1)/(8) , find P (not A and not B).

If A and B are any two events of a random experiment then show that (i) P(A^(C) nn B^(C)) = P(A^(C)) - P(B) "if A" nn B = phi (ii) P(A^(C)//B^(C)) = (1-P(A uu B))/(1-P(B)) "with P(A)" ne 0 and P(B) ne 1

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-PROBABILITY-Exercise -9 ( c)
  1. There are 3 black and 4 white balls in one bag. 4 black and 3 white ba...

    Text Solution

    |

  2. A,B,C are aiming to shoot a balloon. A will succeed 4 times out of 5 a...

    Text Solution

    |

  3. If A,B are two events, then show that P((A)/(B))P(B)+P((A)/(B^(C)))P...

    Text Solution

    |

  4. A pair of dice are rolled.What is the probability that they sum of 7, ...

    Text Solution

    |

  5. A pair of dice are rolled. What is the probability that neither die sh...

    Text Solution

    |

  6. An urn contains 12 red balls and 12 green balls. Suppose two balls are...

    Text Solution

    |

  7. A single die is rolled twice in succession. What is the probability th...

    Text Solution

    |

  8. If one card is drawn at random from a pack of cards then show that eve...

    Text Solution

    |

  9. The probability that a boy A will get a scholarship is 0.9 and that an...

    Text Solution

    |

  10. If A,B, are two events with P(AcupB)=0.65, and P(AcapB)=0.15, then fi...

    Text Solution

    |

  11. If A,B,C are independent events, shows that AcupBandC are also a indep...

    Text Solution

    |

  12. A and B are two independent events such that the probability of the bo...

    Text Solution

    |

  13. A fair die is rolled. Consider the events. A={1,3,5},B={2,3} and C =...

    Text Solution

    |

  14. If A,B,C are three events in a random experiment, Prove the following....

    Text Solution

    |

  15. If A,B,C are three events in a random experiment, Prove the following....

    Text Solution

    |

  16. If A,B,C are three events in a random experiment, Prove the following....

    Text Solution

    |

  17. If A,B,C are three events in a random experiment, Prove the following....

    Text Solution

    |

  18. If A,B are mutually exclusive and P(B)gt0 " then "P((A)/(B))=0.

    Text Solution

    |

  19. If A,B, are ,mutually exclusive then P(A//B^(C))=(p(A))/(1-P(B))," w...

    Text Solution

    |

  20. If A,B are mutually exclusive and P(AcupB)ne0 then p((A)/(AcupB))=(P...

    Text Solution

    |