Home
Class 12
MATHS
A coin is tossed 2 n times. The chance t...

A coin is tossed 2 n times. The chance that the number of times one gets head is not equal to the number of times one gets tail is

A

`12C_(n).(1/2)^(2n)`

B

`1-2nC_(n)`

C

`1-2nC_(n).(1/4^(n))`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • PERMUTATION AND COMBINATIONS

    HIMALAYA PUBLICATION|Exercise Question Bank|104 Videos

  • PROGRESSIONS

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|97 Videos

Similar Questions

Explore conceptually related problems

A coin is tossed 3 times,Write the sample space.

A coin is tossed three times. Find the number of elemnts in 'Sample space '?

A coin is tossed 4 times . The probability of getting atleast one head is

A coin is tossed 8 times . The probability of getting a head three times is :

A coin is tossed 3 times. The probability of getting head once and tail 2 times is

A coin is tossed four times. what will be the sample space.

Six identical coins are arranged in a row. The total number of ways in which the number of heads is equal to the number of tails is

A coin is tossed n times. The probability of getting exactly six heads in

A fair coin is tossed 10 times. Find the probability of at most 6 heads .

HIMALAYA PUBLICATION-PROBABILITY-QUESTION BANK
  1. If random variable X has the following probability distribution then t...

    Text Solution

    |

  2. In an entrance examination there are multiple dioice questions. Ihere ...

    Text Solution

    |

  3. The numbers are chosen from 1 to 30 . The probability that they are no...

    Text Solution

    |

  4. Choose the correct answer: In a box containing 100 bulbs, 10 are def...

    Text Solution

    |

  5. In a binomial distribution n =4, P(X = 0) = 16/81 then P(X=4) equals

    Text Solution

    |

  6. A rifleman is firing at a distant target and has only 10 % chance of h...

    Text Solution

    |

  7. If A and B are arbitrary events then

    Text Solution

    |

  8. A coin is tossed 2 n times. The chance that the number of times one ge...

    Text Solution

    |

  9. Three identical dice are rolled. The probability that the same number ...

    Text Solution

    |

  10. A die is tossed thrice. If event of getting an even number is a succes...

    Text Solution

    |

  11. If x = 33^(n), where n is a positive integral value, then what is the ...

    Text Solution

    |

  12. X speaks truth in 60% and 'Y' in 50% of the cases. The probability tha...

    Text Solution

    |

  13. For a party 7 guests are invited by a husband and wife. They sit in a ...

    Text Solution

    |

  14. There are 12 white and 12 red balls in a bag. Balls are drawn one by o...

    Text Solution

    |

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

    Text Solution

    |

  16. If A and B are mutually exclusive events with P(B) ne 1 then P(A|bar B...

    Text Solution

    |

  17. 5 persons A, B, C, D and E are in a queue of a shop. The probability t...

    Text Solution

    |

  18. Two cards are drawn successively with replacement from a well suffled ...

    Text Solution

    |

  19. If X and Y are independent binomial variates, B(5,1/2) and B(7,1/2), t...

    Text Solution

    |

  20. Let A, B and C be three events such that P(A) = 0.3, P(B) = 0.4, P(C) ...

    Text Solution

    |