Home
Class 10
MATHS
A room contains 30 green chairs and some...

A room contains 30 green chairs and some white chairs if the probability of drawing a white chair is triple that of green chair determine the number of white chairs in the room.

Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    BEYOND PUBLICATION|Exercise EXERCISE|136 Videos

  • POLYNOMIALS

    BEYOND PUBLICATION|Exercise EXERCISE|56 Videos

  • PROGRESSIONS

    BEYOND PUBLICATION|Exercise EXERCISE|259 Videos

Similar Questions

Explore conceptually related problems

A bag contains 6 yellow balls and some green balls. The probability of getting a green ball is triple that of a yellow ball. Determine number of Green balls in the bag and find the probability of each colour ball when a ball is drawn at time randomly.

A box contains 4 red balls, 5 green balls and P white balls. If the probability of randomly picked ball from the box to be a red ball is 1/3 , then find the number of white balls.

A jar contains 18 marbls, some are red and other whtie if a marble is drawn at random from the jar the probability that it is white 5/6. Find the number of white marbles.

In a box, there are 28 marbles of which x are green and the rest are white. If the probability of getting a green marble is 2/7 . Number of white marbles in the problem=………

A box contains 5 red balls , 6 green balls and 7 white balls. If three balls are drawn at random, then find the probability that these are green, red and white in the order if the balls are replaced.

A jar contains 24 marbles, some are green and others are blue. IF a marble is drawn at random from the jar, the probability that it is green is 2//3 . Find the number of blue marbles in the jar.

A bag contains 5 red balls, 6 green balls and 7 white balls. If three balls are drawn at random, one after another with replacement, then find the probability that these are green, red and white in order.

An urn contains two balls each of which is either white or black. A white ball is added to the urn. What is the probability of drawing a white ball from the bag now.

An urn contains 5 white and 3 black balls and 4 balls are drawn at random. The probability of getting white and black balls equal in number is-

An urn contains w white balls and b black balls. Two players Q and R alternately draw a with replacement from the urn. The player that draws a white ball first wins the game. If Q begins the game, find the probability that Q wins the game.

BEYOND PUBLICATION-PROBABILITY-EXERCISE
  1. A room contains 30 green chairs and some white chairs if the probabili...

    Text Solution

    |

  2. Cards marked with numbers 13,14,15…………,60 are placed in a box and mixe...

    Text Solution

    |

  3. Cards marked with numbers 13,14,15…………,60 are placed in a box and mixe...

    Text Solution

    |

  4. There are 30 cards, of same size, in a bag on which numbers 1 to 30 ar...

    Text Solution

    |

  5. A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at ra...

    Text Solution

    |

  6. A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at ra...

    Text Solution

    |

  7. A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at ra...

    Text Solution

    |

  8. Find the probability that a number selected from the numbers 1 to 25 i...

    Text Solution

    |

  9. A bag contains 8 red, 6 white and 4 black balls. A ball is drawn at ra...

    Text Solution

    |

  10. A bag contains 8 red, 6 white and 4 black balls. A ball is drawn at ra...

    Text Solution

    |

  11. A bag contains 8 red, 6 white and 4 black balls. A ball is drawn at ra...

    Text Solution

    |

  12. Find the probability that a number selected at random from the numbers...

    Text Solution

    |

  13. Find the probability that a number selected at randomo from the number...

    Text Solution

    |

  14. Find the probability that a number selected at random from the numbers...

    Text Solution

    |

  15. It is given that in a group of 3 students, the probability of 2 studen...

    Text Solution

    |

  16. A bag contains cards which are numbered from 2 to 90. A card is drawn ...

    Text Solution

    |

  17. A bag contains cards which are numbered from 2 to 90. A card is drawn ...

    Text Solution

    |

  18. A bag contains 4 white balls, 6 red balls, 7 black balls and 3 blue ba...

    Text Solution

    |

  19. A bag contains 4 white balls, 6 red balls, 7 black balls and 3 blue ba...

    Text Solution

    |

  20. A bag contains 4 white balls, 6 red balls, 7 black balls and 3 blue ba...

    Text Solution

    |

  21. A bag contains 4 white balls, 6 red balls, 7 black balls and 3 blue ba...

    Text Solution

    |