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
Doubtnut Promotions Banner Mobile Dark
|

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

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….

Knowledge Check

  • An unbiased coin is tossed to get 2 points for turning up a head and one point for the tail . If three unbiased conis are tossed simultaneously , then the probability of getting a total of odd number of points is ,

    A
    `1/2`
    B
    `1/4`
    C
    `1/8`
    D
    `3/8`

  • 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

    A
    `1//2`
    B
    `1//4`
    C
    `1//8`
    D
    `3//8`

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

    A
    2,4
    B
    2,1
    C
    1,2
    D
    1,1

    • Similar Questions

    Explore conceptually related problems

    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.

    There are three coins. One is a two headed coin (having head on both faces), another is a biased coin that comes up heads 75% of the time and third is an unbiased coin. One of the three coins is chosen at random and tossed, it shows heads, what is the probability that it was the two headed coin ?

    If 10 coins are tossed then mean and variance of x and x denotes the number of heads is

    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

    Home
    Profile