Home
Class 12
MATHS
In a group consisting of 80 men and 30 w...

In a group consisting of 80 men and 30 women, 15 per cent men and 40 per cent women are unemployed . Find the probability that a person selected at random is employed.

Text Solution

Verified by Experts

The correct Answer is:
`(43)/(55)`
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    CHHAYA PUBLICATION|Exercise LONG ANSWER TYPE QUESTIONS|16 Videos

  • PROBABILITY

    CHHAYA PUBLICATION|Exercise SAMPLE QUESTIONS FOR COMPETITIVE EXAMS|18 Videos

  • PROBABILITY

    CHHAYA PUBLICATION|Exercise VERY SHORT ANSWER TYPE QUESTION|61 Videos

  • PLANE

    CHHAYA PUBLICATION|Exercise Sample Question for Competitive Examination( E Assertion - Reason Type )|2 Videos

  • PRODUCTS OF TWO VECTORS

    CHHAYA PUBLICATION|Exercise Sample Questions for Competitive Examination (Assertion - Reason Type )|2 Videos

Similar Questions

Explore conceptually related problems

In a group of 14 males and 6 females, 8 and 3 of the males and the females respectively are aged above 40 years. The probability that a person selected at random from the group is aged above 40 years, given that the selected person is a female is-

Suppose that 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.

In a certain town, 40% of the people have brown hair, 25% have brown eyes, and 15% have both brown hair and brown eyes. If a person selected at random from the town has brown hair, the probability that he also has brown eyes is 1//5 b. 3//8 c. 1//3 d. 2//3

A committee of two persons is selected from two men and two women. What is the probability that the committee will have (a) no man? (b) one man? (c) two men?

Consider a sample space "S" representing the adults in a small town who have completed the requirements for a college degree. They have been categorized according to sex and employment as follows: , Employed, Unemployed Male, 460, 40 Female, 140, 260 An employed person is selected at random. Find the probability that the chosen one is a male.

The mean age of a combined group of men and women is 30 years. If the mean age of the group of men is 32 and that of the group of women is 27, find the percentage of men and women in the group.

Assume that the chances of a patient having a heart attack is 40%. It is also assumed that a meditation and yoga course reduce the risk of heart attack by 30% and prescription of certain drug reduces its chances by 25%. At a time a patient can choose any one of the two options with equal probabilities. It is given that after going through one of the two options the patient selected at random suffers a heart attack. Find the probability that the patient followed a course of meditation and yoga?

There are only two women among 20 persons taking part in a pleasure trip. The 20 persons are divided into two groups, each group consisting of 10 person. Then the probability that the two women will be in the same group is a. 9//19 b. 9//38 c. 9//35 d. none

An insurance company selected 2000 drivers at random (i.e., without any preference of one driver over another) in a particular city to find a relationship between age and accidents. The data obtained is given in the following table: Find the probabilities of the following events for a driver chosen at random from the city: (i) The driver being in the age group 18-29 years and having exactly 3 accidents in one year. (ii) The driver being in the age group of 30-50 years and having one or more accidents in a year. (iii) Having no accidents in the year.

A committee of 3 persons is to be constituted from a group of 2 men and 3 women. In how many ways can this be done? How many of these committees would consist of 1 man and 2 women?

CHHAYA PUBLICATION-PROBABILITY-SHORT ANSWER TYPE QUESTIONS
  1. An executive committee of 6 is formed from 4 ladies and 7 gentlemen. F...

    Text Solution

    |

  2. Four cards are drawn at random from a full packet . Find the probabili...

    Text Solution

    |

  3. A bag contains 10 rupee - coins, 7 fifty-paise coins and 4 twenty finv...

    Text Solution

    |

  4. What is the chance that a leap year selected at random will contain 53...

    Text Solution

    |

  5. Two fair dice are thrown simultaneously. The two scores are then multi...

    Text Solution

    |

  6. Four one-rupee coins and three 50 paise coins are placed at random in ...

    Text Solution

    |

  7. A box contains 40 envelopes of which 25 are ordinary (not meant for ai...

    Text Solution

    |

  8. In a group consisting of 80 men and 30 women, 15 per cent men and 40 p...

    Text Solution

    |

  9. Five Commerce and four Science students are arranged at random in a ro...

    Text Solution

    |

  10. Ten balls are distributed at random among three boxes. What is the pro...

    Text Solution

    |

  11. If the numbers 1,2,3….,n are arranged in a line at random what is the ...

    Text Solution

    |

  12. If P(A) = (1)/(3), P(B) = (1)/(2) , P(Acap B ) = (1)/(4),find the valu...

    Text Solution

    |

  13. Given that P( E) = (1)/(3), P( F) = (1)/(4) and P( E cap F ) = (1)/(6)...

    Text Solution

    |

  14. The probability that a contractor will get a plumbing contract is (2)/...

    Text Solution

    |

  15. A class consists of 30 boys and 20 girls of which half the boys, and h...

    Text Solution

    |

  16. From 200 ticiets marked with the first 200 natural numbers, one is dra...

    Text Solution

    |

  17. There are 52 cards with each of two boys. Each draws a card at random....

    Text Solution

    |

  18. If two numbers are selected at random from the numbers 1,2,3,4 determi...

    Text Solution

    |

  19. A packer of 10 electronic components is known to include 3 defectives....

    Text Solution

    |

  20. A and B are two candidates seeking admission in joint Entrance. The pr...

    Text Solution

    |