Home
Class 12
MATHS
An urn contains 5 red and 2 black balls....

An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the number of black balls. What are the possible values of X? Is X a random variable ?

Text Solution

Verified by Experts

The correct Answer is:
X is random variable.
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise EXERCISE -13.5|15 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise MISCELLANEOUS EXERCISE 13 |20 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise EXERCISE -13.3 |14 Videos

  • MATRICES

    KUMAR PRAKASHAN|Exercise Practice Paper - 3 (Section - D)|1 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Practice Paper - 1 (Section - D)|2 Videos

Similar Questions

Explore conceptually related problems

An urn contains 5 white and 3 red balls. 3 red balls are drawn from box with replacement. If X represents numbers of red balls then obtain its probability distribution.

A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random without replacement the probability of getting exactly one red ball is ……..

A bag contains 8 red and 5 white balls. Three balls are drawn at random. Find the Probability that All the three balls are white

An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. What is the probability that the second ball is red?

An urn contains 10 black and 5 white balls. Two balls are drawn from the urn one after the other without replacement. What is the probability that both drawn balls are black ?

An urn contains m white and n black balls. A ball is drawn at random and is put back into the urn along with k additional balls of the same colour as that of the ball drawn. A ball is again drawn at random. Show that the probability of drawing a white ball now does not depend on k.

A bag contains 8 red and 5 white balls. Three balls are drawn at random. Find the Probability that All the three balls are red

A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one-by-one, with replacement, then the variance of the number of green balls drawn is :

A bag contains 3 red balls and 5 black balls. A ball is selected at random from the bag. What is the probability that the ball selected is (i) red ? (ii) not red?

KUMAR PRAKASHAN-PROBABILITY-EXERCISE -13.4
  1. State which of the following are not the probability distributions of ...

    Text Solution

    |

  2. An urn contains 5 red and 2 black balls. Two balls are randomly drawn....

    Text Solution

    |

  3. Let X represent the difference between the number of heads and the num...

    Text Solution

    |

  4. Find the probability distribution of (i) number of heads in two tos...

    Text Solution

    |

  5. Find the probability distribution of (i) number of heads in two tos...

    Text Solution

    |

  6. Find the probability distribution of (i) number of heads in two tos...

    Text Solution

    |

  7. Find the probability distribution of the number of successes in two to...

    Text Solution

    |

  8. Find the probability distribution of the number of successes in two to...

    Text Solution

    |

  9. From a lot of 30 bulbs which include 6 defectives, a sample of 4 bulbs...

    Text Solution

    |

  10. A coin is biased so that the head is 3 times as likely to occur as tai...

    Text Solution

    |

  11. A random variable X has the following probability distribution: ...

    Text Solution

    |

  12. The random variable X has a probability distribution P(X) of the follo...

    Text Solution

    |

  13. Find the mean number of heads in three tosses of a fair coin.

    Text Solution

    |

  14. Two dice are thrown simultaneously. If X denotes the number of sixes, ...

    Text Solution

    |

  15. Two numbers are selected at random (without replacement) from the firs...

    Text Solution

    |

  16. Let X denote the sum of the numbers obtained when two fair dice are ro...

    Text Solution

    |

  17. A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20,...

    Text Solution

    |

  18. In a meeting, 70% of the members favour and 30% oppose a certain propo...

    Text Solution

    |

  19. Choose the correct answer The mean of the numbers obtained on throwi...

    Text Solution

    |

  20. Choose the correct answer Suppose that two cards are drawn at random...

    Text Solution

    |