Home
Class 12
MATHS
Let an ordinary coin be tossed 15 times....

Let an ordinary coin be tossed 15 times. If `P_r` denotes the probability of getting r tails and `P_k` is maximum then k = _____.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • Elementary Probability

    A DAS GUPTA|Exercise Exercise|137 Videos
  • Differentiation

    A DAS GUPTA|Exercise Exercise|98 Videos
  • Ellipse and Hyberbola

    A DAS GUPTA|Exercise EXERCISE|65 Videos
A DAS GUPTA-Elementary Probability-Exercise
  1. India plays two matches each with West Indies and Australia. In any ma...

    Text Solution

    |

  2. If x denotes the number of sixes in four consecutive throws of a dice,...

    Text Solution

    |

  3. Let an ordinary coin be tossed 15 times. If Pr denotes the probability...

    Text Solution

    |

  4. Two coins are tossed 4 times. The chance that there will be equal numb...

    Text Solution

    |

  5. The probability that an event A happens in one trial of an experiment,...

    Text Solution

    |

  6. The odds in favour of A winning a game against B are 4 : 3. The probab...

    Text Solution

    |

  7. The probability of a missile hitting a target bridge is1/5. Two miss...

    Text Solution

    |

  8. A dice is thrown six times.The probability of getting three sixes, the...

    Text Solution

    |

  9. Let A = [1, 2, 3, ... , n] and f be any mapping from the set A to itse...

    Text Solution

    |

  10. Two distinct integers x and y are chosen, without replacement, at rand...

    Text Solution

    |

  11. A trunk-call is booked. It is known that a trunk-call booked materiali...

    Text Solution

    |

  12. If two events A and B are such that P(A) =0.3, P(B)=0.4 and P(A'nnB') ...

    Text Solution

    |

  13. The probabilities of two events are 0.25 and 0.50. The total probabili...

    Text Solution

    |

  14. The probability that atleast one of the events A and B occurs is 0.6 I...

    Text Solution

    |

  15. If the letters of the word ASSASSIN are written down in a row, the pro...

    Text Solution

    |

  16. If P(A)=(2)/(3), P(B)=(1)/(2) " and " P(A cup B)=(5)/(6), then events ...

    Text Solution

    |

  17. Three dice are rolled. The probability that different numbers will app...

    Text Solution

    |

  18. The probability of happening of an event A is 0.5 and that of B is 0.3...

    Text Solution

    |

  19. If A and B are two independent events such that P(barA nn B)=2/15 and...

    Text Solution

    |

  20. A student appears for tests I, II and III. The student is successful i...

    Text Solution

    |