Four defective oranges are accidentally mixed with sixteen good ones . Two oranges are drawn at random from the mixed lot. If the random variable X denotes the number of defective oranges then find the values of X and number of points in its iverse image.

Suppose two coins are tossed once if X denotes the number of heads .find The valuses of the random variable and the number of elements in its inverse image

An urn contains 5 mangoes and 4 apples. Three fruits are taken at random. If the number of apples taken is a random variable, then find the values of the random variable and number of points in its inverse images.

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

Two bad eggs are accidentally mixed with 10 good ones. 3 eggs are drawn at random with replacement from this lot. i. Compute mean for the number of bad eggs drawn. ii. Hence calculate variance and standard deviation .

In a pack of 52 playing cards, two cards are drawn at random simultaneously. If the number of black cards drawn is a random variable, find the values of the random variable and number of points in its inverse images.

In a pack of 52 playing cards two cards are drawn at random simultaneously if the number of black cards drawn is a ranodm variable find the valties of the random variable and number of points in its inverse images

An urn contains 2 white balls and 3 red balls . A sample of 3 balls are chosen at random from the urn. If X denotes the number of red balls chosen find the values taken by the random variable X and its number of inverse images .

Two balls are chosen randomly from an urn containing 6 red and 8 black balls. Suppose that we win Rs. 15 for each red ball selected and we lose Rs. 10 for each black ball selected. X denotes the winning amount, then find the values of X and number of points in its inverse images.

Suppose X is the number of tails occurred when three fair coins are tossed once simultaneously. Find the values of the random variable X and number of points in its inverse images.

Suppose X is the number of tails occurred when three fair coins are tossed once simultaneously. Find the values of the random variable X and number of points in its inverse images .