Four bad oranges are mixed accidently with 16 good oranges. Find the probability distribution of the number of bad oranges in a draw of two oranges.

Four bad apples are mixed accidentally with 20 good apples. Probability distribution of the number of bad apples in a draw of 2 apples with replacement is formed. The mean is

Find the probability distribution for number of heads obtained in two tosses of a coin.

Five bad oranges are accidently mixed with 20 good ones. If four oranges are drawn one by one successively with replacement, then find the probability distribution of number of bad oranges drawn. Hence find the mean and variance of the distribution.

Five defective mangoes are accidentally mixed with 15 good ones. Four mangoes are drawn at random from this lot. Find the probability distribution of the number of defective mangoes.

Four cards are drawn simultaneously from a well shuffled pack of 52 playing cards. Find the probability distribution of the number of aces.

Four bad apples are mixed accidentally with 20 good apples. If 3 apples are drawn one by one with replacement then mean of number of good apples is

Five defective bolts are accidently mixed with twenty good ones. If four bolts are drawn at random from this lot, find the probability distribution of the number of defective bolts.

Four bad eggs are accidentally mixed with 10 good ones. Three eggs are drawn simultaneously at random. Find the mean and variance of the bad eggs drawn.

A fruit basket has 20 apples and 30 oranges. Fina a. the ratio of the number of apples to the number of oranges, and b. the ratio of the number of oranges to the total number of fruits in the basket.

Oranges are to be transferred from larger boxes into smaller boxes. When a large box is emptied, the oranges from it fill two smaller boxes and still 10 oranges remain outside. If the number of oranges in a small box are taken to be x, what is the number of oranges in the larger box?