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 inverse 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.

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.

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 ranodm variable find the valties 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 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 .

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 .