Home
Class 12
MATHS
Number of times a fair coin must be...

Number of times a fair coin must be tossed so that the probabaility of getting at least one head is at least 0.95 is

A

5

B

6

C

7

D

12

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    MCGROW HILL PUBLICATION|Exercise Solved Examples (Level 2 straight Objective Correct )|14 Videos
  • PROBABILITY

    MCGROW HILL PUBLICATION|Exercise Solved Examples (Numerical Answer )|21 Videos
  • PROBABILITY

    MCGROW HILL PUBLICATION|Exercise Previous Years B-Architecture Entrance Examination Papers|21 Videos
  • PERMUTATIONS AND COMBINATIONS

    MCGROW HILL PUBLICATION|Exercise Questions from Previous Years. B-Architecture Entrance Examination Papers |17 Videos
  • PROGRESSIONS

    MCGROW HILL PUBLICATION|Exercise Questions from Previous Years. B-Architecture Entrance Examination Papers|25 Videos

Similar Questions

Explore conceptually related problems

The minimum number of times a fair coin needs to be tossed, so that the probability of getting at least two heads is at least 0.96, is ______.

Minimum number of times a fair coin must be tossed so that the probility of gettig atleast one head is more than 99% is

The minimum number of xx a fair coin needs to be tossed,so that the probability of getting at least two heads is at least 0.96 is :

A coin is tossed 5xx.What is the probability of getting at least 3 heads.

Two coins are tossed simultaneously. What is the probability of getting at least one head?

Two fair coins are tossed. What is the probability of getting at the most one head?

A coin is tossed 6 times . Find the probability of getting at least 3 heads .

Two coins are tossed simultaneously. Find the probability of getting at least one head.

Three coins are tossed once. Find the probability of getting at least one head.

MCGROW HILL PUBLICATION-PROBABILITY-Solved Examples (Level 1 Single Correct )
  1. The probability that a student is not a swimmer is 1/5. What is the pr...

    Text Solution

    |

  2. One hundred identical coins, each with probability 'p' of showing head...

    Text Solution

    |

  3. Number of times a fair coin must be tossed so that the probab...

    Text Solution

    |

  4. A box contains N coins, m of which are fair and the rest are biased. T...

    Text Solution

    |

  5. The probability of India winning a test match against West Indies i...

    Text Solution

    |

  6. If 0 lt P(A) lt 1, 0 lt P(B) lt 1 and P(A cup B)=P(A)+P(B)-P(A)P(B), ...

    Text Solution

    |

  7. If A1, A2, …, An are n independent events, such that P(Ai)=(1)/(i+1), ...

    Text Solution

    |

  8. A four digit number (numbered from 0000 to 9999) is said to be lucky i...

    Text Solution

    |

  9. Three numbers are chosen at random without replacement from {1,2,3,......

    Text Solution

    |

  10. One ticket is selected at random from 50 tickets numbered 00, 01, 0...

    Text Solution

    |

  11. An urn contains nine balls of which three are red, four are blue and t...

    Text Solution

    |

  12. Let omega be a complex cube root unity with omega!=1. A fair die is th...

    Text Solution

    |

  13. A signal which can be green or red with probability 4/5 and 1/5 respec...

    Text Solution

    |

  14. Three numbers are chosen at random from the numbers 1, 2. ... 20. The ...

    Text Solution

    |

  15. An unbiased cubical die is thrown 5 times. The probability that the ma...

    Text Solution

    |

  16. Let A and B be two events such that P(A) = 3/7, P(B) = 4/7 and P(AuuB)...

    Text Solution

    |

  17. If A,B and C are three independent events such that P(A)=P(B)=P(C )=...

    Text Solution

    |

  18. A and B are two students. Their probabilities of solving a problem cor...

    Text Solution

    |

  19. Suppose A and B are two events such that P(A) ne 0, P(B) ne 0, then

    Text Solution

    |

  20. Fig. 24.8 shows three events A, B and C. Probabilities of different ev...

    Text Solution

    |