Home
Class 12
MATHS
Choose the correct answer Suppose that...

Choose the correct answer
Suppose that two cards are drawn at random from a deck of cards. Let X be the number of aces obtained. Then the value of E(X) is

A

`(37)/(221)`

B

`(5)/(13)`

C

`(1)/(13)`

D

`(2)/(13)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise EXERCISE -13.5|15 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise MISCELLANEOUS EXERCISE 13 |20 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise EXERCISE -13.3 |14 Videos

  • MATRICES

    KUMAR PRAKASHAN|Exercise Practice Paper - 3 (Section - D)|1 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Practice Paper - 1 (Section - D)|2 Videos

Similar Questions

Explore conceptually related problems

Two cards are drawn at random from a pack of 52 cards. The probability that both the cards are kings is ........

Choose the correct answer intx^(2)e^(x^(3))dx equals

There are 5 cards numbered 1 to 5, one number on one card. Two cards are drawn at random without replacement. Let X denote the sum of the numbers on two cards drawn. Find the mean and variance of X.

Choose the correct answers int(dx)/(e^(x)+e^(-x)) is equal to

4 cards are drawn from a well-shuffled deck of 52 cards. What is the probability of obtaining 3 diamonds and one spade ?

Choose the correct answer The mean of the numbers obtained on throwing a die having written 1 on three faces, 2 on two faces and 5 on one face is

There are 5 cards numbered 1 to 5 on it. Two cards are drawn at random without replacement. Let X denotes the sum of the numbers on two cards drawn. Find mean and variance.

A die is thrown and a card is selected at random from a deck of 52 playing cards. The probability of getting an even number on the die and a spade card is …………

An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the number of black balls. What are the possible values of X? Is X a random variable ?

One card is drawn from a well-shuffled deck of 52 cards. Calculate the probability that the card will not be an ace.

KUMAR PRAKASHAN-PROBABILITY-EXERCISE -13.4
  1. State which of the following are not the probability distributions of ...

    Text Solution

    |

  2. An urn contains 5 red and 2 black balls. Two balls are randomly drawn....

    Text Solution

    |

  3. Let X represent the difference between the number of heads and the num...

    Text Solution

    |

  4. Find the probability distribution of (i) number of heads in two tos...

    Text Solution

    |

  5. Find the probability distribution of (i) number of heads in two tos...

    Text Solution

    |

  6. Find the probability distribution of (i) number of heads in two tos...

    Text Solution

    |

  7. Find the probability distribution of the number of successes in two to...

    Text Solution

    |

  8. Find the probability distribution of the number of successes in two to...

    Text Solution

    |

  9. From a lot of 30 bulbs which include 6 defectives, a sample of 4 bulbs...

    Text Solution

    |

  10. A coin is biased so that the head is 3 times as likely to occur as tai...

    Text Solution

    |

  11. A random variable X has the following probability distribution: ...

    Text Solution

    |

  12. The random variable X has a probability distribution P(X) of the follo...

    Text Solution

    |

  13. Find the mean number of heads in three tosses of a fair coin.

    Text Solution

    |

  14. Two dice are thrown simultaneously. If X denotes the number of sixes, ...

    Text Solution

    |

  15. Two numbers are selected at random (without replacement) from the firs...

    Text Solution

    |

  16. Let X denote the sum of the numbers obtained when two fair dice are ro...

    Text Solution

    |

  17. A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20,...

    Text Solution

    |

  18. In a meeting, 70% of the members favour and 30% oppose a certain propo...

    Text Solution

    |

  19. Choose the correct answer The mean of the numbers obtained on throwi...

    Text Solution

    |

  20. Choose the correct answer Suppose that two cards are drawn at random...

    Text Solution

    |