Home
Class 11
MATHS
A man has 3 fifty rupees notes, 4 hundre...

A man has 3 fifty rupees notes, 4 hundred rupees notes and 6 five hundred rupees notes in his pocket. If 2 notes are taken at random, what are the odds in favour of both notes being of hundred rupee denomination ?

A

`1 : 12`

B

`12 : 1`

C

`13 : 1`

D

`1 : 13`

Text Solution

Verified by Experts

The correct Answer is:
A, B
Promotional Banner

Topper's Solved these Questions

  • INTRODUCTION OF PROBABILITY THEOREM

    SURA PUBLICATION|Exercise ADDITIONAL PROBLEMS SECTION - A|14 Videos
  • INTRODUCTION OF PROBABILITY THEOREM

    SURA PUBLICATION|Exercise ADDITIONAL PROBLEM SECTION - D|5 Videos
  • INTEGRAL CALCULUS

    SURA PUBLICATION|Exercise Section - D (5 marks)|3 Videos
  • MATRICES AND DETERMINANTS

    SURA PUBLICATION|Exercise ADDITIONAL PROBLEMS SECTION -D (5 MARK )|3 Videos

Similar Questions

Explore conceptually related problems

A man has 2 ten rupee notes, 4 hundred rupee notes and 6 five hundred rupee in his pocket. If 2 notes are taken at random, what are the odds in favour of both notes being of hundred rupee denomination and also its probability?

A basket contains 2 blue flowers,4 red flowers and 6 white flowers.If two flowers are drawn chosen at random , what are the odds in favour of both flowers being red flowers and also its probability.

In each of the following experiments specify appropriate sample space (i) A boy has 1 rupee coin, a 2 rupee coin and a 5 rupee coin in his pocket. He takes out two coins out of his pocket, one after the other. (ii) A person is noting down the number of accidents along a busy highway during a year.

Suppose a girl throws a die. If she gets as 5 or 6, she tosses a coin three times and notes the number of heads. If she gets I, 2, 3 or 4, she tosses a coin once and notes whether a head or tail is obtained. If she obtained exactly one head, wlhat is the probability that she threw 1,2,3 or 4 with the die?

Answer the following questions . a. The earth's magnetic field varies from point is space. Does it also change with time ? It so , on what time scate does it change appreciably ? b. The earth's core is known to contain iron. Yet geologists do not regard this as a source of the earth's magnetism why ? c. The charged currents in the outer conducting regions of the earth's core are thought to be responsible for earth's magnetism . What might be the ' battery ' (i.e., the source of energy) to sustain these currents ? d. The earth may have even reversed the direction of its field several times during its history of 4 to 5 billion years. How can geologists know about the earth's field in such distant past ? e. The earth's field departs from its dipole substantially at large distances (greater than about 30,000 km) what agencies may be responsible for this distortion ? f. Interstellar space has an extremely weak magnetic field of the order of 10^(-12) T, Can such a weak field be of any significant consequence ? Explain. [Note : Exercise 2 is meant mainly to arouse your curiosity . Answers to some question above are tentative or unknown . Brief answers wherever possible are given at the end . For details , you should consult a good text on geomagnetism.]

А game consists of tossing a one rupee coin 3 times and noting its outcome each time. Deskhitha wins if all the tosses give the same result i.e., three heads or three tails, and loses otherwise. Calculate the probability that she will lose the game.

An unbiased coin is tossed. If the result is a head, a pair of unbiased dice is rolled and the number obtained by adding the numbers on two faces is noted. If the result is a tail, a card from a well-shuffled pack of 11 cards numbered 2, 3, 4, ..., 12 is picked and the number on the card is noted. What is the probability that the noted number is either 7 or 8?

In a game, a man wins Rs 100 if he gets 5 or 6 on a throw of a fair die and loses Rs 50 for getting any other number on the die. If he decides to throw the die either till he gets a five or a six or to a maximum of three throws, then his expected gain/loss (in rupees) is: (a) 400/3 gain (b) 400/9 loss (c) 0 (d) 400/3 loss

SURA PUBLICATION-INTRODUCTION OF PROBABILITY THEOREM-EXERCISE 12.5
  1. Let A and B be two events such that P(bar(A uu B)) = 1/6, P(A nn B) = ...

    Text Solution

    |

  2. Two items are chosen from a lot containing twelve items of which four ...

    Text Solution

    |

  3. A man has 3 fifty rupees notes, 4 hundred rupees notes and 6 five hund...

    Text Solution

    |

  4. A letter is taken at random from the letters of the word 'ASSISTANT' a...

    Text Solution

    |

  5. A matrix is chosen at random from a set of all matrices of order 2, wi...

    Text Solution

    |

  6. A bag contains 5 white and 3 black balls. Five balls are drawn success...

    Text Solution

    |

  7. If A and B are two events such that A sub Band P(B) ne 0, then which o...

    Text Solution

    |

  8. A bag contains 6 green, 2 white, and 7 black balls. If two balls are ...

    Text Solution

    |

  9. If X and Y be two events such that P(X//Y) = 1/2, P(Y//X) = 1/3 and P(...

    Text Solution

    |

  10. An urn contains 5 red and 5 black balls. A ball is drawn at random, it...

    Text Solution

    |

  11. A number x is chosen at random from the set {1,2,3,4, ………., 100}. Defi...

    Text Solution

    |

  12. If two events A and B are independent such that P(A) = 0.35 and P(A uu...

    Text Solution

    |

  13. If two events A and B are such that P (barA) = 3/10 and P(A nn barB) =...

    Text Solution

    |

  14. If A and B are two events such that P(A) = 0.4, P(B) = 0.8 and P(B//A)...

    Text Solution

    |

  15. There are three events A, B and C of which one and only one can happen...

    Text Solution

    |

  16. If a and b are chosen randomly from the set {1, 2, 3, 4} with replacem...

    Text Solution

    |

  17. It is given that the events A and B are such that P(A) = 1/4, P (A//B)...

    Text Solution

    |

  18. In a certain college 4% of the boys and 1 % of the girls are taller th...

    Text Solution

    |

  19. Ten coins are tossed. The probability of getting at least 8 heads is

    Text Solution

    |

  20. The probability of two events A and B are 0.3 and 0.6 respectively. Th...

    Text Solution

    |