Home
Class 12
MATHS
There are 4 cards numbered 1, 3, 5 and 7...

There are 4 cards numbered 1, 3, 5 and 7, one number on one card. Two cards are drawn at random without replacement. Let 'X' denote the sum of the numbers on the two drawn cards. Find the mean and variance of X.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    MODERN PUBLICATION|Exercise EXERCISE 13 (a) (SATQ)|5 Videos

  • PROBABILITY

    MODERN PUBLICATION|Exercise EXERCISE 13 (a) (LATQ)|7 Videos

  • MATRICES

    MODERN PUBLICATION|Exercise CHAPTER TEST (3)|12 Videos

  • RELATIONS AND FUNCTIONS

    MODERN PUBLICATION|Exercise CHAPTER TEST (1)|12 Videos

Similar Questions

Explore conceptually related problems

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.

Two cards are drawn from 52 playing cards without replacement. The variance of the number of ace is

There are 10 cards numbered 1 to 10 in a bag. Two cards are drawn one after other without replacement. The probability that their sum is odd, is

Two cards are drawn simultaneously (without replacement) from a well-shuffled pack of 52 cards.Find the mean and variance of the number of red cards.

Two cards are drawn one at a time & without replacement from a pack of 52 cards Determine the number of ways in which the two cards can be drawn.

Two cards are drawn simultaneously (or successively without replacement) from a well-shuffled pack of 52 cards. Find the mean and variance of the number of aces.

Two cards are drawn without replacement from a well shuffled deck of 52 cards.Let x be the number of face cards drawn.Then Find the value of P(X=2)

Two cards are drawn at random and without replacement from a pack of 52 playing cards. Find the probability that both the cards are black.