Home
Class 11
MATHS
A basket contains 15 guava and 12 banana...

A basket contains 15 guava and 12 banana. Out of which 5 guava and 7 banana are defective. If a person takes out 3 at random, then what is the probability that either all are guava or all are good?

Text Solution

Verified by Experts

The correct Answer is:
0.27
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Question of Module|9 Videos

  • PRINCIPLE OF MATHEMATICAL INDUCTION

    KUMAR PRAKASHAN|Exercise NCERT EXEMPLAR PROBLEMS (QUESTION OF MODULE )|11 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Question of Module)|16 Videos

Similar Questions

Explore conceptually related problems

A box contains 12 balls out of which x are black. If one ball is drawn at random from the box, what is the probability that it will be a black ball? If 6 more black balls are put in the box, the probability of drawing a black ball is now double of what it was before. Find x.

12 defective pens are accidentally mixed with 132 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is taken out at random from this lot. Determine the probability that the pen taken out is a good one.

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble taken out will be ( 1 ) red ? ( 2 ) white ? ( 3 ) not green?

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble taken out will be (i) red? (ii) white ? (ii) not green?

A bag X contains 3 white and 2 black balls; another bag Y contains 2 white and 4 black balls. A bag and a ball out of it is picked at random. What is the probability that the ball is white?

A company has three plants at which it produces a certain item. 30% are produced at plant A, 50% at plant B and 20% at plant C. Suppose that 1%, 4% and 3% of the items produced at plants A, B and C respectively are defective. If an item is selected at random from all those produced, what is the probability that the item is defective ?

A company has three plants at which it produces a certain item. 30% are produced at plant A, 50% at plant B and remaining at plant C. Suppose that 1% , 4% and 3% of the items produced at plants A, B and C respectively are defective. If an item is selected at random from all of those produced, what is the probability that item was produced at plant B is defective ?

A box contains 100 bulbs out of which 10 are defective. A sample of 5 bulbs is drawn. The probability that none is defective , is

A bag containsa red ball a blue ball and an yellow ball, all the balls being of the same size. Manasa takes out a ball fromthe bag without looking into it. What is the probability that she takes a (i) yellow ball? (ii) red ball? (iii) blue ball?

A person goes to office either by car, scooter, bus or train probability of which being 1/7, 3/7, 2/7 and 1/7 respectively. Probability that he reaches office late, if he takes car, scooter, bus or train is 2/9, 1/9, 4/9 and 1/9 respectively. Given that he reached office in time, then what is the probability that he travelled by a car?

KUMAR PRAKASHAN-PROBABILITY-PRACTICE WORK
  1. Three squares of chess board are selected at random. Find the probabil...

    Text Solution

    |

  2. What is the probability that in a leap year chosen at random will cont...

    Text Solution

    |

  3. A and B are mutually exclusive event. If P(A)=(1)/(4),P(B)=(2)/(5) and...

    Text Solution

    |

  4. A die is thrown twice. What is the probability that at least one of th...

    Text Solution

    |

  5. A, B and C are mutually exclusive and exhaustive events. If P(B)=(3)/(...

    Text Solution

    |

  6. Following Vann diagram show the probabilities of three events. Fi...

    Text Solution

    |

  7. Find the probability of getting almost two tails or at least two heads...

    Text Solution

    |

  8. A number is chosen at random from the numbers 20 to 50. What is the pr...

    Text Solution

    |

  9. A basket contains 15 guava and 12 banana. Out of which 5 guava and 7 b...

    Text Solution

    |

  10. If A and B are mutually exclusive events, P(A) = 0.35 and P(B)= 0.45, ...

    Text Solution

    |

  11. Find the probability that when a hand of 7 cards is drawn from a well ...

    Text Solution

    |

  12. In an interview for a job, 5 boys and 3 girls appeared. If 4 persons a...

    Text Solution

    |

  13. A box contains 8 red, 3 white and 9 black balls. If three balls are dr...

    Text Solution

    |

  14. A group consists of 3 men, 2 women and 4 children. If four persons are...

    Text Solution

    |

  15. An integer is chosen at random from first 200 natural numbers. What is...

    Text Solution

    |

  16. The probability that a student will receive A, B, C or D grade are 0.4...

    Text Solution

    |

  17. A and B are mutually exclusive events. P(A)=0.28, P(B)=0.38, then find...

    Text Solution

    |

  18. Without repetition of the numbers, four digit numbers are formed with ...

    Text Solution

    |

  19. Three of six vertices of a regular hexagon are chosen at random. What ...

    Text Solution

    |

  20. Two dice are thrown together. What is the probability that sum of the ...

    Text Solution

    |