Write the sample space for selecting two balls from a bag containing 6 balls numbered 1 to 6 (using tree diagram).

The total number of ways of selecting 3 balls from a bag containing 7 balls is

Write the sample space for tossing three coins using tree diagram.

In each of the following experiments, find the sample space S and the sample points n(S). A ball is drawn from a bag containing 3 red, 3 green and 4 white balls.

The number of ways of selecting 10 balls from unlimited number of red, black, white and green balls, is

Find the number of ways of selecting 9 balls from 6 red balls, 5 white balls and 5 blue balls if each selection consists of 3 balls fo each colour.

A box contains cards numbered from 1 to 30. Write the sample space S and no. of sample points n(S) and if a card is drawn at random, write A and n(A) if the card drawn is divisible by5.

Outcomes of which of the following experiments are equally likely? 1. Getting a digit 1, 2, 3, 4, 5 or 6 when a die is rolled. Selecting a different colour ball from a bag of 5 red balls, 4 blue balls and 1 black ball. Winning in a game of carrom. Units place of a two digit number selected may be 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9. Selecting a different colour ball from a bag of 10 red balls, 10 blue balls and 10 black balls. Raining on a particular day of July

Find the number of ways of selecting 9 ball from 6 red balls, 5 white balls and 5 blue balls if each selection consists of 3 balls of each colour.

A bag contains 4 red and 4 black balls, another bag contains 2 red and 6 black balls. One of the two bags is selected at random and a ball drawn from the bag which is found to be red. Find the probability that the ball is drawn from the first bag.

Two balls are drawn in succession without replacement from an urn containing four red balls and three black balls. Let X be the possible outcomes drawing red balls. Find the probability mass function and mean for X.