Home
Class 12
MATHS
An urn contains 25 balls of which 10 bal...

An urn contains 25 balls of which 10 balls bear a mark 'X' and the remaining 15 bear a mark 'Y'. A ball is drawn at random from the urn, its mark is noted down and it is replaced. If 6 balls are drawn in this way, find the probability that the number of balls with 'X' mark and 'Y' mark will be equal.

Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    MODERN PUBLICATION|Exercise EXERCISE|543 Videos

  • MOCK TEST-3

    MODERN PUBLICATION|Exercise EXERCISE|35 Videos

  • RELATIONS AND FUNCTION

    MODERN PUBLICATION|Exercise EXAMPLE|212 Videos

Similar Questions

Explore conceptually related problems

An urn contains 25 balls of which 10 balls bear a mark 'X' and the remaining 15 bear a mark 'Y'. A ball is drawn at random from the urn, its mark is noted down and it is replaced. If 6 balls are drawn in this way, find the probability that at least one ball will bear 'Y' mark.

An urn contains 25 balls of which 10 balls bear a mark 'X' and the remaining 15 bear a mark 'Y'. A ball is drawn at random from the urn, its mark is noted down and it is replaced. If 6 balls are drawn in this way, find the probability that not more than 2 will bear 'Y' mark.

An urn contains 25 balls of which 10 balls bear a mark 'X' and the remaining 15 bear a mark 'Y'. A ball is drawn at random from the urn, its mark is noted down and it is replaced. If 6 balls are drawn in this way, find the probability that all will bear 'X' mark.

An urn contains 7 white, 5 black and 3 red balls. Two balls are drawn at random, Find the probability that : one ball is white.

An urn contains 7 white, 5 black and 3 red balls. Two balls are drawn at random, Find the probability that : both the balls are red.

A bag contains 4 white and 3 black balls. Two balls are drawn at random. Find the probability that they are of the same colour.

An urn contains 6 balls of which two are red and four are black. Two balls are drawn at random. Probability that they are of the different colours is :

An urn contains 8 red and 5 white balls. Three balls are drawn at random. Then, the probability that balls of both colors are drawn is:

An urn contains 7 red and 4 blue balls. Two balls are drawn at random with replacement. Find the probability of getting 2 blue balls.

MODERN PUBLICATION-PROBABILITY-EXERCISE
  1. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

    Text Solution

    |

  2. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

    Text Solution

    |

  3. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

    Text Solution

    |

  4. In a hurdle race, a player has to cross 10 hurdles. The probability th...

    Text Solution

    |

  5. A die is thrown again and again until three sixes are obtained. Find t...

    Text Solution

    |

  6. If a leap year is selected at random, what is the chance that it will ...

    Text Solution

    |

  7. Two dice are thrown simultaneously. Find the probability of getting si...

    Text Solution

    |

  8. How many times must a man toss a fair coin so that the probability of ...

    Text Solution

    |

  9. In a game, a man wins a rupee for a six and loses a rupee for any othe...

    Text Solution

    |

  10. Suppose we have four boxes A,B,C and D containing coloured marbles as ...

    Text Solution

    |

  11. Suppose we have four boxes A,B,C and D containing coloured marbles as ...

    Text Solution

    |

  12. Suppose we have four boxes A,B,C and D containing coloured marbles as ...

    Text Solution

    |

  13. Assume that the chances of a patient having a heart attack is 40%. It ...

    Text Solution

    |

  14. If each element of a second order determinant is either zero or one, w...

    Text Solution

    |

  15. An electronic assembly consists of two subsystems, say, A and B. From ...

    Text Solution

    |

  16. An electronic assembly consists of two subsystems, say, A and B. From ...

    Text Solution

    |

  17. Bag I contains 3 red and 4 black balls and Bag II contains 4 red and 5...

    Text Solution

    |

  18. If A and B are two events such that P(A) ne 0 and P(B/A) = 1, then

    Text Solution

    |

  19. If P(A/B) > P(A), then which of the following is correct : :

    Text Solution

    |

  20. If A and B are any two events such that : P(A) + P(B) – P(A and B) = P...

    Text Solution

    |