Home
Class 12
MATHS
A bag contains 4 red and 6 black balls. ...

A bag contains 4 red and 6 black balls. A ball is drawn at random from the bag, its colour is observed and this ball along with two additional balls of the same colour are returned to the bag. If now a ball is drawn at random from the bag, then the probability that this drawn ball is red, is

A

`(3)/(10)`

B

`(2)/(5)`

C

`(1)/(5)`

D

`(3)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    MODERN PUBLICATION|Exercise CHAPTER TEST|12 Videos
  • PROBABILITY

    MODERN PUBLICATION|Exercise MOCK TEST (Select the correct option)|10 Videos
  • PROBABILITY

    MODERN PUBLICATION|Exercise CHECK YOUR UNDERSTANDING|10 Videos
  • MATRICES

    MODERN PUBLICATION|Exercise CHAPTER TEST (3)|12 Videos
  • RELATIONS AND FUNCTIONS

    MODERN PUBLICATION|Exercise CHAPTER TEST (1)|12 Videos

Similar Questions

Explore conceptually related problems

A bag contains 4 red and 6 black balls. A ball is drawn at random from the bag, its colour is observed and this ball along with two additional balls of the same colour are returned to the bag. If now a ball is drawn at random from the bag, If now a ball is drawn at random from the bag, then the probability that this drawn ball is red, is

A bag contains 4 red and 6 blach balls O balls is drawn at random from the bag,its colour is observed and this ball along with two addibonal balls of the same colour are returnted to the bag,then the probabilaty then the drawn ball is red,is

A bag contains 4 white and 5 black balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is white.

A bag contains 8 white and 6 black balls. A ball is drawn at random from the bag, its colour is observed and is kept aside (i.e. not returned in the bag). Three additional balls of the same colour as observed are put in the bag. If now two balls are drawn simultaneously at random from the bag, then the probability that these are of different colours, is ____

A bag contains 3 red and 5 blue balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is: red?

A bag contains 3 red and 5 blue balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is yellow ?

A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is: red (b) black

A bag contains 4 red and 3 black balls.If one ball is drawn at random,then what is the probability of drawing a black ball?

A bag contains w white and b black balls. A ball is drawn at random and put back in the bag with k additional balls of the same colour. A ball is again drawn at random from the bag. The probability that it is black is

MODERN PUBLICATION-PROBABILITY-COMPETITION FILE
  1. it is given that the events A and B are such that P(A)=1/4, P(A/B)=1/2...

    Text Solution

    |

  2. A die is thrown. Let A be the event that the number obtained is grea...

    Text Solution

    |

  3. One ticket is selected at random from 50 tickets numbered 00, 01, 02...

    Text Solution

    |

  4. An urn contains nine balls of which three are red, four are blue and t...

    Text Solution

    |

  5. If C and D are two events such that C subDand P(D) is not equal to 0, ...

    Text Solution

    |

  6. Consider 5 independent Bernoulli's trials each with probability of ...

    Text Solution

    |

  7. Let A, B, C be pariwise independent events with P(C) >0 and P(AnnBnnC)...

    Text Solution

    |

  8. Three numbers are chosen at random without replacement from {1, 2, 3, ...

    Text Solution

    |

  9. Let A and B be two events such that P (bar(AuuB))=1/6, P(AnnB)=1/4and ...

    Text Solution

    |

  10. If 12 identical balls are to be placed in 3 identical boxes,then the p...

    Text Solution

    |

  11. Let two fair six-faced dice A and B be thrown simultaneously. If E(1) ...

    Text Solution

    |

  12. A box contains 15 green and 10 yellow balls. If 10 balls are randomly ...

    Text Solution

    |

  13. If two different numbers are taken from the set (0, 1, 2, 3. 10): then...

    Text Solution

    |

  14. For three events A ,B and C ,P (Exactly one of A or B occurs) =P ...

    Text Solution

    |

  15. A bag contains 4 red and 6 black balls. A ball is drawn at random from...

    Text Solution

    |

  16. In a random experiment, a fair die is rolled until two fours are obtai...

    Text Solution

    |

  17. Probability of hitting a targen independently of 4 persons are (1)/(2)...

    Text Solution

    |