A group X contains 3 men and one woman and another group Y contains 1 man and three women. Describe the sample space of the experiment of selecting a perosn from any of the two groups.

From a group of 2 men and 3 women, two persons are selected. Describe the sample space of the experiment. If E is the event in which one man and one woman are selected, then which are the cases favourable to E ?

Describe the sample space for the indicated experiment in the following : Select two persons from a group of 3 boys and 2 girls.

A bag contains 2 white balls and 3 blue balls. What is the sample space if the experiment consists of drawing from the bag : 1 ball

A box contains 1 red and 3 identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment.

A bag X contains 4 white balls and 2 black balls, while another bag Y contains 3 white balls and 3 black balls. Two balls are drawn (without replacement) at random from one of the bags and were found to be one white and one black. Find the probability that the balls were drawn from bag Y.

In the following , describe the sample space for the indicated experiment. 2 boys and 2 girls are in Room X, and 1 boy and 3 girls in Room Y. Specify the sample space for the experiment in which a room is selected and then a person.

Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.

A bag contains 6 red and 4 black balls, another bag contains 5 red and 3 black balls. One of the two bags is selected at random and a ball is drawn from the bag which is found to be red. Find the probability that the ball is drawn from the first bag.