Home
Class 12
MATHS
A biased coin with probability P,(0 < p ...

A biased coin with probability `P,(0 < p ,1)` of heads is tossed unitl a head appear for the first time. If the probability that the number of tosses required is even is `2/5` then `p=`

A

`1/2`

B

`1/3`

C

`1/4`

D

`1/5`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION - B Objective Type Questions (One option is correct))|65 Videos

  • PROBABILITY

    AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION - C Objective Type Questions (More than one options are correct))|21 Videos

  • PROBABILITY

    AAKASH INSTITUTE|Exercise TRY YOURSELF|36 Videos

  • PRINCIPLE OF MATHEMATICAL

    AAKASH INSTITUTE|Exercise Section-D:(Assertion-Reason Type Questions)|12 Videos

  • RELATIONS AND FUNCTIONS

    AAKASH INSTITUTE|Exercise Assignment (Section - J) Aakash Challengers Questions|8 Videos

Similar Questions

Explore conceptually related problems

A biased coin with probability of head as 2/3 is tosses 4 times. If it is known that both head and tail occur, then probability that head and tail occur alternately is

A biased coin with probability of getting head is twice that of tail, is tossed 4 times If a random variable X is number of heads obtained, then expected value of X is :

A purse contains 3 coins C_(1), C_(2), C_(3) . Where C_(1) is a fair coin, C_(2) is a biased coin with probability (2)/(3) of showing up head and C_(3) is a fake coin containing head on both sides. One of the coins is selected at random and tossed twice. If head is obtained on both the tosses, then the probability that the coin selected is not a fair coin is p. Then p =

A biased coin in which probability of getting head is twice to that of tail. If coin is tossed 3 times then the probability of getting two tails and one head is

A player X has a biased coin whose probability of showing heads is p and a player Y has a fair coin. They start playing a game with their own coins and play alternately. The player who throws a head first is a winner. If X starts the game, and the probability of winning the game by both the players is equal, then the value of 'p is :

A biased coin has (2)/(3) probability of landing heads.If the coin is flipped 50 xx,then the probability that the total number of heads is even is:

There are two coins, one unbiased with probability 1/2 or getting heads and the other one is biased with probability 3/4 of getting heads. A coin is selected at random and tossed. It shows heads up. Then the probability that the unbiased coin was selected is

A coin is biased so that the probability of falling.head when tossed is (1)/(4) If the coin is tossed 5Mxx the probability of obtaining 2 heds and 3 tails,with heads occurring in succession is

AAKASH INSTITUTE-PROBABILITY-ASSIGNMENT (SECTION - A Competition Level Questions)
  1. In a simultaneous toss of four coins, the probability of getting exact...

    Text Solution

    |

  2. A die is tossed twice. Getting a number greater than 4 is considered a...

    Text Solution

    |

  3. A biased coin with probability P,(0 < p ,1) of heads is tossed unitl a...

    Text Solution

    |

  4. If two coins are tossed five times, thenthe probability of getting 5 h...

    Text Solution

    |

  5. A die is thrown 100 times, getting an even number is considered a succ...

    Text Solution

    |

  6. A contest consist of predicting the result win, draw or defeat of 7 fo...

    Text Solution

    |

  7. In a bag there are three tickets numbered 1,2,3. A ticket is drawn at ...

    Text Solution

    |

  8. Assuming that for a husband-wife couple the chance of their child bei...

    Text Solution

    |

  9. A bag contains 2 white &4 black balls. A ball is drawn 5 times, each b...

    Text Solution

    |

  10. In a binomial distribution the probability of getting a success is 1/4...

    Text Solution

    |

  11. If X follows a binomial distribution with parameters n=100 and p = 1/...

    Text Solution

    |

  12. If X has binomial distribution with mean np and variance npq, then (P(...

    Text Solution

    |

  13. In a box containing 100 eggs 10 eggs are roten the probability that ou...

    Text Solution

    |

  14. If a die is thrown 7 times, then the probability of obtaining 5 exactl...

    Text Solution

    |

  15. A die is thrown 10 times. If getting an even number is considered as a...

    Text Solution

    |

  16. In a binomial distribution, the mean is 4 and variance is 3. Then its ...

    Text Solution

    |

  17. A coin is tossed successively three times. The probability of getting ...

    Text Solution

    |

  18. If there are n independent trials, p and q are the probability of succ...

    Text Solution

    |

  19. If in a trial the probability of success is twice the probability of f...

    Text Solution

    |

  20. The probability that a student is not a swimmer is 1/5. What is the pr...

    Text Solution

    |