Home
Class 12
MATHS
A person who tosses an unbiased coin gai...

A person who tosses an unbiased coin gains two points for turning up a head and loses one point for a tail. If three coins are tossed and the total score X is observed, then the range of X is

A

{0, 3, 6}

B

{-3, 0, 3}

C

{-3, 0, 3, 6}

D

{-3, 3, 6}

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • RANDOM VARIABLE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|34 Videos

  • RANDOM VARIABLE

    AAKASH SERIES|Exercise EXERCISE - I|33 Videos

  • QUADRATIC EQUATIONS & EXPRESSIONS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|88 Videos

  • RANDOM VARIABLES

    AAKASH SERIES|Exercise Exercise 4.4|9 Videos

Similar Questions

Explore conceptually related problems

An unbaiseed coin is tossed to get 2 points for tunring up a head and one point for the tail. If three unbaised coins are tossed simultaneously , then the probability of getting a total of odd number of points is

If 4 coins are tossed then the mean and variance of X where X is the number of head

Find the probability of obtaining two tails and one head when three coins are tossed.

Three coins are tossed simultaneously then probability of getting at lealst one tail is….

A coin is biased such that the probability of getting head is thrice to that of getting a tail. If such coin is tossed twice find the probability of getting one head exactly.

If X is the number of heads getting when five coins are tossed, then mean and variance are

An unbiased coin is tossed n times. If the probability of getting atleast one head is greater than 0.8, then the least value of n is

AAKASH SERIES-RANDOM VARIABLE -EXERCISE - II
  1. A person who tosses an unbiased coin gains two points for turning up a...

    Text Solution

    |

  2. A random variable X has the following distribution {:(X=x(1):,1,2,3,...

    Text Solution

    |

  3. The probability distribution of a random variable is given below: {:...

    Text Solution

    |

  4. A random variable x had its range {0, 1, 2} and the probabilities are ...

    Text Solution

    |

  5. The value of c for which P(x=k)=ck^(2) can serve as the probability d...

    Text Solution

    |

  6. The range of random vairable x={1, 2, 3 …..} and the probabilities are...

    Text Solution

    |

  7. The range of random variable x={1, 2, 3….} and the probabilities are g...

    Text Solution

    |

  8. If the range of a random variable X is {0,1,2,3,4,……….} with P(X=k)=((...

    Text Solution

    |

  9. A random variable x takes the values 0, 1, 2, 3 and its mean is 1.3. ...

    Text Solution

    |

  10. If X is a random variable with the following probability distribution ...

    Text Solution

    |

  11. A die a rolled and let x denote twice the number appearing on its face...

    Text Solution

    |

  12. A pair of dice is thrown at a time. X is the maximum of the two number...

    Text Solution

    |

  13. A sample of 2 itmes is selected at random from a bag containing 5 item...

    Text Solution

    |

  14. A player tosses two coins. He wins Rs. 1 if 1 head appears, Rs 2 if 2...

    Text Solution

    |

  15. Let X denote the profit of a business man. The probability of getting ...

    Text Solution

    |

  16. The random variable takes the values 1,2,3,…….m. If P(X=n)=(1)/(m) to ...

    Text Solution

    |

  17. Two cards are drawn successively one by one with out replacement from ...

    Text Solution

    |

  18. A : If the difference between the mean and variance of a binomial dist...

    Text Solution

    |

  19. If the standerd deviation of the binomial distribution (q+p)^(16) is 2...

    Text Solution

    |

  20. If a binomial distribution has mean 2.4 and variance is 1.44, then n=

    Text Solution

    |