Home
Class 10
MATHS
12 defective pens are accidentally mixed...

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.

Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    VGS PUBLICATION-BRILLIANT|Exercise CREATIVE BITS FOR CCE MODEL EXAMINATION|75 Videos

  • POLYNOMIALS

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|244 Videos

  • PROBABILITY (MULTIPLE CHOICE QUESTION)

    VGS PUBLICATION-BRILLIANT|Exercise PROBABILITY (MULTIPLE CHOICE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

A box contains 100 electric bulbs. Out of them, 10 are defective bulbs. One bulb is taken out at random from this box. What is the probability that it is a non-defective bulb?

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 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 red?

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 white?

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 red?

A box contains 10 mangoes out of which 4 are spoiled. 2 mangoes are taken together at random. If one of them is found to be good, then the probability that the other is also good, is

A box contains pencils and pens. The probability of picking out a pen at random of 0.65. Then the probability of not picking a pen is

A bag contains 10 identical balls, of which 4 are blue and 6 are red. Three balls are taken out at random from the bag one after the other. Find the probability that all the three balls drawn are red without replacement.

VGS PUBLICATION-BRILLIANT-PROBABILITY-EXERCISE
  1. Five cards -the ten , jack queen, king and ace of diamond, are well sh...

    Text Solution

    |

  2. Five cards -the ten , jack queen, king and ace of diamond, are well sh...

    Text Solution

    |

  3. 12 defective pens are accidentally mixed with 132 good ones. IT is no...

    Text Solution

    |

  4. A lot of 20 bulbs contain 4 defective ones. One bulb is drawn at rando...

    Text Solution

    |

  5. A box contains 90 discs which are numbered from 1 to 90. IF one disc i...

    Text Solution

    |

  6. A box contains 90 discs which are numbered from 1 to 90. IF one disc i...

    Text Solution

    |

  7. A box contains 90 discs which are numbered from 1 to 90. IF one disc i...

    Text Solution

    |

  8. Suppose you drop a die at random on the rectangular region shown in fi...

    Text Solution

    |

  9. A lot consists of 144 ball pens of which 20 are defective and the othe...

    Text Solution

    |

  10. Two dice are rolled simultaneously and counts are added A student ar...

    Text Solution

    |

  11. A game consists of tossing a one rupee coin 3 times and noting its out...

    Text Solution

    |

  12. A dice is thrown twice. What is the probability that (i) 5 will not co...

    Text Solution

    |

  13. Two customers Shyam and Ekta are visiting a particular shop in the sam...

    Text Solution

    |

  14. A bag contains 5 red balls and some blue balls, If the probability of ...

    Text Solution

    |

  15. A box contains 12 balls out of which x are black, IF one ball is drawn...

    Text Solution

    |

  16. A jar contains 24 marbles, some are green and others are blue. IF a ma...

    Text Solution

    |

  17. When die is rolled once unbiased what is the probability of getting a ...

    Text Solution

    |

  18. The probability of an event is always in between 0 and 1. Why?

    Text Solution

    |

  19. Find the probability of getting the same number on the both the dice w...

    Text Solution

    |

  20. Find the probability of getting a prime number, when a card drawn at r...

    Text Solution

    |